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Link Posted: 1/2/2014 3:29:32 PM EDT
[#1]
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Quoted:
Looks like a Noveske Switchblock.  Three adjustments, Off, Suppressed and Normal.  Never seen it in silver.  Nice.  Wait, never seen it on a .308.  Real Nice.
View Quote

I've never seen two of them in parallel.
Link Posted: 1/2/2014 7:29:48 PM EDT
[#2]
Oh, my GOD!





It has begun.





My CC just burst into flames.






Here's the start:



LOWER GROUP:
Mega Lower ( from matched set ) ( ordering tomorrow fm my FFL )
Geissele SSA-E trigger  ( ordered )
Receiver Extension ( buffer ) :  ArmaLite ( rifle length ) ( ordered )
Buffer and Spring:  SOG Armory  AR-10 type rifle length and weight  ( ordered Armalite buffer and JP polished spring )  ( SOGs not in stock anywhere )
Grip:  Tango Down ( ordered )





LPK minus FCG and safety:  CMMG, .308 small parts kit  ( ordered )
Safety:  Battle Arms Development, ambi  ( ordered )
Bolt Stop:  DPMS  ( with CMMG LR parts kit...ordered )
Stock:  Magpul PRS  ( ordered )
UPPER:
Upper Receiver:  Mega ( from matched set )  ( ordering tomorrow fm my FFL )
Barrel/Bolt combo:  JP Precision 22 inch w/ matched bolt head   ( ordered )
Bolt Carrier:  Young, chrome group with everything but the bolt head (
see above )  ( this, like the JP Bolt Head is SR-25 style )  ( HOLDING PATTERN, trying to get a hold of Young )
Gas Tube:  standard AR-15 rifle gas tube or possible WMD nitrided tube  ( ordered )
Compensator:  likely Surefire  ( holding )




 
Link Posted: 1/2/2014 7:39:42 PM EDT
[#3]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Oh, my GOD!

It has begun.

My CC just burst into flames.


Here's the start:

LOWER GROUP:

Mega Lower ( from matched set ) ( ordering tomorrow fm my FFL )

Geissele SSA-E trigger  ( ordered )

Receiver Extension ( buffer ) :  ArmaLite ( rifle length ) ( ordered )

Buffer and Spring:  SOG Armory  AR-10 type rifle length and weight  ( ordered Armalite buffer and JP polished spring )  ( SOGs not in stock anywhere )

Grip:  Tango Down ( ordered )

LPK minus FCG and safety:  CMMG, .308 small parts kit  ( ordered )

Safety:  Battle Arms Development, ambi  ( ordered )

Bolt Stop:  DPMS  ( with CMMG LR parts kit...ordered )

Stock:  Magpul PRS  ( ordered )





UPPER:

Upper Receiver:  Mega ( from matched set )  ( ordering tomorrow fm my FFL )

Barrel/Bolt combo:  JP Precision 22 inch w/ matched bolt head   ( ordered )

Bolt Carrier:  Young, chrome group with everything but the bolt head ( see above )  ( this, like the JP Bolt Head is SR-25 style )  ( HOLDING PATTERN, trying to get a hold of Young )

Gas Tube:  standard AR-15 rifle gas tube or possible WMD nitrided tube  ( ordered )

Compensator:  likely Surefire  ( holding )
 
View Quote


Lol, I feel you.

Just ordered Maten upper and URX3.1. Still debating what 16in rifle gassed barrel and bcg I want. Figure ill build an upper then move to the lower.
Link Posted: 1/2/2014 10:35:03 PM EDT
[#4]
Any pics of rifles with a standard rifle length PRI tube?  I'm deciding between this or the keymod.
Link Posted: 1/3/2014 12:19:29 AM EDT
[#5]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Looks like a Noveske Switchblock.  Three adjustments, Off, Suppressed and Normal.  Never seen it in silver.  Nice.  Wait, never seen it on a .308.  Real Nice.
View Quote

Its not a Noveski switchblock but it is my own switchblock
Started as one big long chunk of stainless, bored it out to fit the barrel then cut it in two that made one gas switchblock and the front selector block.
If Noveski had them for sale I would have just purchased one but I got tired of waiting so I made my own design.

Link Posted: 1/3/2014 12:14:29 PM EDT
[#6]

Discussion ForumsJump to Quoted PostQuote History
Quoted:





Its not a Noveski switchblock but it is my own switchblock

Started as one big long chunk of stainless, bored it out to fit the barrel then cut it in two that made one gas switchblock and the front selector block.

If Noveski had them for sale I would have just purchased one but I got tired of waiting so I made my own design.

http://i197.photobucket.com/albums/aa166/redtazdog/DSCN1379w.jpg

View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:



Quoted:

Looks like a Noveske Switchblock.  Three adjustments, Off, Suppressed and Normal.  Never seen it in silver.  Nice.  Wait, never seen it on a .308.  Real Nice.


Its not a Noveski switchblock but it is my own switchblock

Started as one big long chunk of stainless, bored it out to fit the barrel then cut it in two that made one gas switchblock and the front selector block.

If Noveski had them for sale I would have just purchased one but I got tired of waiting so I made my own design.

http://i197.photobucket.com/albums/aa166/redtazdog/DSCN1379w.jpg

AWESOME!!



 
Link Posted: 1/3/2014 1:05:02 PM EDT
[#7]
Yes
.748 or so for the gas block journal size
No to gas port size
ECC barrel is CL
It will use an DPMS rifle length gas tube


Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quick question, finally ready to start acquiring parts for my first complete build.  

I am going to have a barrel made while waiting for maten upper/lower to become available.  I want the dimensions to be the same as the ECC/M110K1 as I love the look and everyone says how smooth a shooter it is.

Does anyone know the dimensions of the ECC barrel? Gas block size? Gas port size?  Gas tube length?

Finally, does KAC sell the suppressor collar?

Thanks
View Quote

Link Posted: 1/3/2014 3:37:17 PM EDT
[#8]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Yes
.748 or so for the gas block journal size
No to gas port size
ECC barrel is CL
It will use an DPMS rifle length gas tube



View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Yes
.748 or so for the gas block journal size
No to gas port size
ECC barrel is CL
It will use an DPMS rifle length gas tube


Quoted:
Quick question, finally ready to start acquiring parts for my first complete build.  

I am going to have a barrel made while waiting for maten upper/lower to become available.  I want the dimensions to be the same as the ECC/M110K1 as I love the look and everyone says how smooth a shooter it is.

Does anyone know the dimensions of the ECC barrel? Gas block size? Gas port size?  Gas tube length?

Finally, does KAC sell the suppressor collar?

Thanks



Cool thanks for the info.
Link Posted: 1/3/2014 9:17:17 PM EDT
[#9]
Had trouble finding this exact info, but can you use the Seekins enhanced bolt catch on the Maten lower?
Link Posted: 1/3/2014 10:01:00 PM EDT
[#10]
No you have to use a 308 bolt catch I believe. Mega recommends using a DPMS or CMMG one.

I'm not 100%, but I think you can use the Phase 5 Tactical enhanced catch.
Link Posted: 1/3/2014 10:32:07 PM EDT
[#11]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
No you have to use a 308 bolt catch I believe. Mega recommends using a DPMS or CMMG one.

I'm not 100%, but I think you can use the Phase 5 Tactical enhanced catch.
View Quote

Phase 5 works absolutely flawlessly in my gun. I love it.
Link Posted: 1/4/2014 8:12:52 AM EDT
[#12]
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Quoted:
Phase 5 works absolutely flawlessly in my gun. I love it.
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Same here.
Link Posted: 1/4/2014 3:53:17 PM EDT
[#13]
Well, ordered the last of my parts including mags.



Well....and optics and rings....but let's NOT go there, yet.



I guess Mega is behind on production so who knows how long that will take.



I got ahold of Young Mfg and they told me to call back in ( you guessed it ) two weeks.  LOL.  Nice folks and I bet they

are busy as hell because I hear nothing but good stuff about their products.  That being said, he who heistates is lost, so I decided to go with a CMMG carrier as the bolt tunnel is chrome lined it's CMMG, not DPMS.



Now the wait begins.



Joy.




Link Posted: 1/4/2014 6:11:11 PM EDT
[#14]
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Quoted:
Well, ordered the last of my parts including mags.

Well....and optics and rings....but let's NOT go there, yet.

I guess Mega is behind on production so who knows how long that will take.

I got ahold of Young Mfg and they told me to call back in ( you guessed it ) two weeks.  LOL.  Nice folks and I bet they
are busy as hell because I hear nothing but good stuff about their products.  That being said, he who heistates is lost, so I decided to go with a CMMG carrier as the bolt tunnel is chrome lined it's CMMG, not DPMS.

Now the wait begins.

Joy.
View Quote


Nice, where did you find the cmmg?

I ended up ordering an RCA BCG cause I couldn't find anything in stock.  Decided to take a chance with them. Hopefully they have the quirks worked out. Hear good things from those who got some of the letter bcg once they worked some things out...we will see.
Link Posted: 1/4/2014 8:10:02 PM EDT
[#15]
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Quoted:
Well....and optics and rings....but let's NOT go there, yet.
View Quote



PST 2.5-10x44 mil/mil, ADM recon mount.


Job done.  
Link Posted: 1/10/2014 1:00:52 PM EDT
[#16]
Hey there folks!  I'm in the process of putting together a components list for my eventual MKM build.  Got the set for a Christmas present to me, and cannot wait to start building!

Anyway - I'm really liking the JP components for the upper and am planning on going with;
- Supermatch barrel (medium contour), 20"
- JP low-profile adjustable gas block.

However - I'm concerned about the MKM handguard having enough clearance over the JP low pro.  The specs on JP's website indicate a minimum required ID of 1.750" for proper clearance (noting that will allow 0.050" all around in clearance).  Measuring the ID of the handguard (shortest ID - from internal rib to internal rib), I get approximately 1.70" or so.

Does anyone have any experience with this configuration?  I have the 12" handguard, so the gas block will be exposed so I'm not too concerned with contact on an ongoing basis, just in installation/removal - assuming if all is correct, I'll have a tiny 0.025" clearance.

Any input/experiences are most welcome - thanks!

-Kevin
Link Posted: 1/10/2014 1:52:16 PM EDT
[#17]
Can't go wrong with JP, get their BCG as well as i have not heard of any issues there.  The hardest part of the build will be waiting for the parts.  Not sure about the gas block, but i am sure there are people here with good info on it.  

As well, read up on this thread.  A lot of good info concerning buffers, springs etc.  Seems to be the main issue, having the correct buffer.

Good luck and post pics as it comes along.  You made a great choice!!!

Sam
Link Posted: 1/11/2014 3:55:28 PM EDT
[#18]
I used a RRA two stage LPK with mine and the bolt catch has been fine. although the 308 BC is certainly going to give more area for teh bolt face to work with

Link Posted: 1/11/2014 5:36:22 PM EDT
[#19]
Discussion ForumsJump to Quoted PostQuote History
Quoted:



PST 2.5-10x44 mil/mil, ADM recon mount.


Job done.  
View Quote View All Quotes
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Quoted:
Quoted:
Well....and optics and rings....but let's NOT go there, yet.



PST 2.5-10x44 mil/mil, ADM recon mount.


Job done.  


The PST 2.5-10 X32 Mil/Mil FFP looks interesting as well. I'd rather have the FFP.
Link Posted: 1/11/2014 6:22:54 PM EDT
[#20]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


The PST 2.5-10 X32 Mil/Mil FFP looks interesting as well. I'd rather have the FFP.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Quoted:
Well....and optics and rings....but let's NOT go there, yet.



PST 2.5-10x44 mil/mil, ADM recon mount.


Job done.  


The PST 2.5-10 X32 Mil/Mil FFP looks interesting as well. I'd rather have the FFP.



Yeah, it's a pretty awesome bandwagon.  
Link Posted: 1/11/2014 8:02:05 PM EDT
[#21]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


Yeah, it's a pretty awesome bandwagon.  
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Quoted:
Quoted:
Well....and optics and rings....but let's NOT go there, yet.



PST 2.5-10x44 mil/mil, ADM recon mount.


Job done.  


The PST 2.5-10 X32 Mil/Mil FFP looks interesting as well. I'd rather have the FFP.


Yeah, it's a pretty awesome bandwagon.  


I'll probably end up going Nightforce, though. Too bad NF discontinued their Compact line. Maybe they'll bring out something new at SHOT.
Link Posted: 1/11/2014 10:50:01 PM EDT
[#22]
I still can't decide...Leupold or Vortex....Grrrr!
but here's some goodies I could decide on!!!!
']
']
/']
 
Link Posted: 1/12/2014 1:44:42 PM EDT
[#23]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Had trouble finding this exact info, but can you use the Seekins enhanced bolt catch on the Maten lower?
View Quote

Your mega lower didnt come with one?
Link Posted: 1/12/2014 8:26:07 PM EDT
[#24]
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Quoted:

I'll probably end up going Nightforce, though. Too bad NF discontinued their Compact line. Maybe they'll bring out something new at SHOT.
View Quote


You mean like this?


Nightforce NXS 2.5-10X24 in ADM Recon Mount by X Ring, on Flickr


Honestly, the newer 2.5-10X42 is probably a better optic. I would trade up if the opportunity ever came about. However, it is still a awesome scope.
Link Posted: 1/13/2014 4:58:08 AM EDT
[#25]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


You mean like this?

[email=mailto:http://www.flickr.com/photos/114230979@N03/11916368905/]http://farm4.staticflickr.com/3720/11916368905_b190e8f097_b.jpg[/email]
Nightforce NXS 2.5-10X24 in ADM Recon Mount by X Ring, on Flickr


Honestly, the newer 2.5-10X42 is probably a better optic. I would trade up if the opportunity ever came about. However, it is still a awesome scope.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:

I'll probably end up going Nightforce, though. Too bad NF discontinued their Compact line. Maybe they'll bring out something new at SHOT.


You mean like this?

[email=mailto:http://www.flickr.com/photos/114230979@N03/11916368905/]http://farm4.staticflickr.com/3720/11916368905_b190e8f097_b.jpg[/email]
Nightforce NXS 2.5-10X24 in ADM Recon Mount by X Ring, on Flickr


Honestly, the newer 2.5-10X42 is probably a better optic. I would trade up if the opportunity ever came about. However, it is still a awesome scope.


Actually, I was speaking about their 2.5 -10 X32 scope. I didn't know they made a X24 scope.
Link Posted: 1/13/2014 8:03:01 AM EDT
[#26]
I wasn't aware they discontinued that line. The only NF compact scope thats not available to the public anymore is the 2.5-10X24. They still list the compact line on their website and have both the X32 and X42 listed.
Link Posted: 1/13/2014 10:39:42 PM EDT
[#27]
Well, my lower was ordered...it's about 3 months out, nominal ± 1 month.



I have all these great parts laying around and nothing to put them in... .



Gives me time to maybe order that Young Bolt carrier I decided to skip on.  
Link Posted: 1/13/2014 10:52:46 PM EDT
[#28]
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Quoted:

Gives me time to maybe order that Young Bolt carrier I decided to skip on.  
View Quote


Good luck. I was on their waiting list for a year and a half. Still think im on it.
Link Posted: 1/13/2014 11:18:48 PM EDT
[#29]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I wasn't aware they discontinued that line. The only NF compact scope thats not available to the public anymore is the 2.5-10X24. They still list the compact line on their website and have both the X32 and X42 listed.
View Quote


I just checked Nightforce's site. You are correct. I thought it was the other way around with the x24 still in production. I had seen a x24 still around,, but it turns out it was the 1-4 model, not the 2.5-10x24. My mistake.

Thanks for the info. Wish it was FFP though.
Link Posted: 1/14/2014 12:09:09 AM EDT
[#30]
guys, I have a maten extended on backorder and I am gathering parts for the build. I have a 24" lilja barrel coming that is .936 at the gas block and I want to try a slr adjustable gas block clamp style. will it fit under handguard? thanks for looking. I will contribute some pictures and such as parts arrive.

already ordered:
maten ext keymod set
lilja 24" 308 barrel
cmmg bcg
ar10 prs
a2 buffer tube
dpms rifle buffer
dpms rifle spring
yhm rifle gas tube

things to buy:
slr adj gas block
giessel trigger
spuhr scope mount
Link Posted: 1/14/2014 8:03:11 AM EDT
[#31]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

Thanks for the info. Wish it was FFP though.
View Quote


In that magnification range, I wouldn't let FFP become a deal breaker. You may even decide you dont want it at all.
You may already have formed an opinion but I will share mine on FFP scopes just in case.
In the power ranges from 1x-10x (even up to 15x really), FFP scopes just don't do anything for me. At ranges where I would hold for wind, hold for misses, or even range a target, my scope is going to be set on its highest power anyway be it 10X or 12X etc... Also with FFP scopes, reticles start to get very thin and small at the lower powers where you may need faster shots. Now with higher power scopes, 15X-25X, FFP really comes in handy in for some tyes of shooting where you need to use your reticle scale when not set at the highest power. Still it has its drawbacks though.

I use my FFP scopes and am glad they have that feature. However, I don't miss it on the scopes that don't have it.

Just my .02 after using both types of scopes at various distances. It doesn't apply to everyone though, some prefer FFP for everything.
Link Posted: 1/14/2014 8:57:29 AM EDT
[#32]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


In that magnification range, I wouldn't let FFP become a deal breaker. You may even decide you dont want it at all.
You may already have formed an opinion but I will share mine on FFP scopes just in case.
In the power ranges from 1x-10x (even up to 15x really), FFP scopes just don't do anything for me. At ranges where I would hold for wind, hold for misses, or even range a target, my scope is going to be set on its highest power anyway be it 10X or 12X etc... Also with FFP scopes, reticles start to get very thin and small at the lower powers where you may need faster shots. Now with higher power scopes, 15X-25X, FFP really comes in handy in for some tyes of shooting where you need to use your reticle scale when not set at the highest power. Still it has its drawbacks though.

I use my FFP scopes and am glad they have that feature. However, I don't miss it on the scopes that don't have it.

Just my .02 after using both types of scopes at various distances. It doesn't apply to everyone though, some prefer FFP for everything.
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Quoted:
Quoted:

Thanks for the info. Wish it was FFP though.


In that magnification range, I wouldn't let FFP become a deal breaker. You may even decide you dont want it at all.
You may already have formed an opinion but I will share mine on FFP scopes just in case.
In the power ranges from 1x-10x (even up to 15x really), FFP scopes just don't do anything for me. At ranges where I would hold for wind, hold for misses, or even range a target, my scope is going to be set on its highest power anyway be it 10X or 12X etc... Also with FFP scopes, reticles start to get very thin and small at the lower powers where you may need faster shots. Now with higher power scopes, 15X-25X, FFP really comes in handy in for some tyes of shooting where you need to use your reticle scale when not set at the highest power. Still it has its drawbacks though.

I use my FFP scopes and am glad they have that feature. However, I don't miss it on the scopes that don't have it.

Just my .02 after using both types of scopes at various distances. It doesn't apply to everyone though, some prefer FFP for everything.



Exactly my experience as well.

I have a sneaking suspicion that the reason for such MASSIVE proliferation of FFP reticles the past few years has more to do with wanting to keep up with all the other guys on the internet, and far less to do with individuals actually taking advantage of its benefits.  I highly doubt the two gentlemen I personally know who have FFP reticles on GAP rifles that they haven't fired in well over two years, just taken pictures to post on message boards, are the exception to the rule.  When I asked why, both gave a similar answer...."it cost so much, i don't want to risk ruining it by shooting it."  
Link Posted: 1/14/2014 11:33:53 PM EDT
[#33]
First build and I thought I've read this thread through, but I'm having an issue with my PRS stock.  Charging handle hits the cheek riser!  Box is marked 308.  Any suggestions or am I screwed?
Link Posted: 1/14/2014 11:54:48 PM EDT
[#35]
Link Posted: 1/15/2014 7:56:39 AM EDT
[#36]
That is a AR-10 / SR-25 PRS. You have the correct stock.
Judging by the lack of trigger or bolt catch I assume there are other parts missing as well. Try it again once you have everything assembled.
Link Posted: 1/15/2014 8:11:22 AM EDT
[#37]

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Quoted:





Is the BCG/buffer/spring in it?
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Beat me to it.  You have the right stock.  You'll need the weapon fully assembled.  Once you do everything will time correctly.  I will tell you that on scoped rifles, a tac latch, like the kind from Badger Ordnance, is REALLLLY handy.  This is from a guy who hates extended ANYTHING.



 
Link Posted: 1/15/2014 10:31:36 AM EDT
[#38]
Will a .936 slr adjustable gas block fit under a maten keymod handguard?
Link Posted: 1/15/2014 10:33:02 AM EDT
[#39]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

Beat me to it.  You have the right stock.  You'll need the weapon fully assembled.  Once you do everything will time correctly.  I will tell you that on scoped rifles, a tac latch, like the kind from Badger Ordnance, is REALLLLY handy.  This is from a guy who hates extended ANYTHING.
 
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Quoted:

Beat me to it.  You have the right stock.  You'll need the weapon fully assembled.  Once you do everything will time correctly.  I will tell you that on scoped rifles, a tac latch, like the kind from Badger Ordnance, is REALLLLY handy.  This is from a guy who hates extended ANYTHING.
 

I have medium Gunfighters on all my rifles.
Link Posted: 1/15/2014 2:05:48 PM EDT
[#40]
You are correct, I don't have my internal parts yet.  THANKS!
Looking at the JP LMOS BCG, is there a down side to the Low Mass vs Full Mass?
what spring should I use if I go with a Low Mass?

Thanks for the help!
Link Posted: 1/15/2014 2:25:48 PM EDT
[#41]
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Quoted:
what spring should I use if I go with a Low Mass?
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Use the standard spring.  Meaning, whichever spring is appropriate for your stock.  If you're using a full length A2-style stock, use the spring for that, and if you're using an adjustable carbine stock of some sort, use the shorter spring intended for those setups.  Make sure to use the appropriate buffer, as well.

I run the JP Low Mass carrier with JP enhanced bolt and it's super nice.  I also run a Syrac adjustable gas block.  The adjustable gas block is more for when the suppressor arrives, but can also help with tuning the rest of the system, even when unsupressed.
Link Posted: 1/15/2014 3:02:04 PM EDT
[#42]
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Quoted:

Use the standard spring.  Meaning, whichever spring is appropriate for your stock.  If you're using a full length A2-style stock, use the spring for that, and if you're using an adjustable carbine stock of some sort, use the shorter spring intended for those setups.  Make sure to use the appropriate buffer, as well.

I run the JP Low Mass carrier with JP enhanced bolt and it's super nice.  I also run a Syrac adjustable gas block.  The adjustable gas block is more for when the suppressor arrives, but can also help with tuning the rest of the system, even when unsupressed.
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Quoted:
Quoted:
what spring should I use if I go with a Low Mass?

Use the standard spring.  Meaning, whichever spring is appropriate for your stock.  If you're using a full length A2-style stock, use the spring for that, and if you're using an adjustable carbine stock of some sort, use the shorter spring intended for those setups.  Make sure to use the appropriate buffer, as well.

I run the JP Low Mass carrier with JP enhanced bolt and it's super nice.  I also run a Syrac adjustable gas block.  The adjustable gas block is more for when the suppressor arrives, but can also help with tuning the rest of the system, even when unsupressed.


What barrel do you have?

I have the RA Select 1:11 twist 20" barrel, w/JP low mass BCG, syrac adj block and standard length DPMS spring/buffer... the BCG is on backorder, hope to get it late this month or early next.
Link Posted: 1/15/2014 3:20:56 PM EDT
[#43]
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Quoted:
You are correct, I don't have my internal parts yet.  THANKS!
Looking at the JP LMOS BCG, is there a down side to the Low Mass vs Full Mass?
what spring should I use if I go with a Low Mass?

Thanks for the help!
View Quote

I have a JP SCBS in mine. I really like it, and I like being able to change springs to further tune the rifle.
Link Posted: 1/15/2014 6:54:10 PM EDT
[#44]
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Quoted:


What barrel do you have?

I have the RA Select 1:11 twist 20" barrel, w/JP low mass BCG, syrac adj block and standard length DPMS spring/buffer... the BCG is on backorder, hope to get it late this month or early next.
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what spring should I use if I go with a Low Mass?

Use the standard spring.  Meaning, whichever spring is appropriate for your stock.  If you're using a full length A2-style stock, use the spring for that, and if you're using an adjustable carbine stock of some sort, use the shorter spring intended for those setups.  Make sure to use the appropriate buffer, as well.

I run the JP Low Mass carrier with JP enhanced bolt and it's super nice.  I also run a Syrac adjustable gas block.  The adjustable gas block is more for when the suppressor arrives, but can also help with tuning the rest of the system, even when unsupressed.


What barrel do you have?

I have the RA Select 1:11 twist 20" barrel, w/JP low mass BCG, syrac adj block and standard length DPMS spring/buffer... the BCG is on backorder, hope to get it late this month or early next.

I'm running the RA Ultra Match 1:10 20".  Less than 100 rounds through it, but so far so good.
Link Posted: 1/15/2014 9:44:50 PM EDT
[#45]
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I'm running the RA Ultra Match 1:10 20".  Less than 100 rounds through it, but so far so good.
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I was going to go with that barrel, had it on my wish list for a long time. Then I figured even with hand loads I wouldn't be shooting anything over 190gr, and it was out of stock for a long time (until now of course). last week I ordered the Select 1:11. I guess I have 90 days to change my mind.
Link Posted: 1/15/2014 9:51:09 PM EDT
[#46]
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I was going to go with that barrel, had it on my wish list for a long time. Then I figured even with hand loads I wouldn't be shooting anything over 190gr, and it was out of stock for a long time (until now of course). last week I ordered the Select 1:11. I guess I have 90 days to change my mind.
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I'm running the RA Ultra Match 1:10 20".  Less than 100 rounds through it, but so far so good.


I was going to go with that barrel, had it on my wish list for a long time. Then I figured even with hand loads I wouldn't be shooting anything over 190gr, and it was out of stock for a long time (until now of course). last week I ordered the Select 1:11. I guess I have 90 days to change my mind.

Well, back when I bought mine, it was all they had. LOL  So, I figured what the heck.  All of their barrels are solid based on everything I've read.
Link Posted: 1/16/2014 1:50:51 AM EDT
[#47]
Thanks
Link Posted: 1/16/2014 1:52:46 AM EDT
[#48]
Any big difference between a JP  and RA barrel 18" or 20"?
I was looking to go JP all the way.  But RA barrels seem to keep coming up in this thread. Would I be just paying for a name?

This forum is awesome. Thanks for all the advice.
Link Posted: 1/16/2014 7:32:21 AM EDT
[#49]
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Any big difference between a JP  and RA barrel 18" or 20"?
I was looking to go JP all the way.  But RA barrels seem to keep coming up in this thread. Would I be just paying for a name?

This forum is awesome. Thanks for all the advice.
View Quote


Im sure there is a difference but most shooters would probably never notice it. I would still give my money to JP though. Its a little more expensive but I believe they have a slightly better product. The barrel is a very important component for accuracy, thats the last place I would skimp on a build. Thats coming from a happy Rainier Arms customer.

Gonna have to throw Lilja in the mix also. I went with the .750" contour 20" and would not hesitate to buy another. They make an awesome barrel.
Link Posted: 1/18/2014 10:35:31 AM EDT
[#50]
Got my MATEN fully built.




















Parts list:


MEGA MKM MATEN upper and lower


Spikes Tactical .750 adjustable gas block


Rainier Arms Select™ .308 Barrel - 16 SS 1x11 twist


Rainier Arms Raptor Ambidextrous Charging Handle - 7.62MM


Palmetto State Armory LPK, buffer, spring, and buffertube.


Magpul STR, MBUS Gen2 Front/Rear and MOE grip.







Having absolute hell with a .308 CMMG BCG going all the way forward with two different kinds of .308 ammo.  DPMS BCG works perfectly fine and when CMMG BCG is tested on DPMS upper and barrel it does the same thing.  Bought a new BCG from Shadow Ops Weaponry last night.

 
 
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