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5/30/2025 2:05:22 PM EDT
[#1]
When would FDE NT4s have started to enter inventory? A tan one would look good with my build but if they weren't around in 2006 I'll go for black instead
Collector, historian, and enthusiast of A.R.M.S. rails, mounts, and accessories.
5/30/2025 3:36:19 PM EDT
[#2]
bump
Attached File
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
5/30/2025 3:38:09 PM EDT
[#3]
bump
Attached File
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
5/30/2025 3:40:23 PM EDT
[#4]
Why is there an upper with a folding front sight behind the FSB?
5/30/2025 3:46:38 PM EDT
[#5]
Quote History
Originally Posted By ThatGuy01:
Why is there an upper with a folding front sight behind the FSB?
View Quote

Two is one, one is none.
Originally Posted By bradpierson26:
So I know you're a SF whore . . . . .
5/30/2025 9:04:11 PM EDT
[#6]
Quote History
Originally Posted By thatARMSguy:
how much did the su-237 run you? gonna run one on my prototype build
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By thatARMSguy:
Originally Posted By Dyzastr:
Starting a new block 1 and block 2. The block 2 rail is still in the wrap. I get to break the seal, but having a hard time going through with it. Makes me wish I'd gotten a beat up one as it's going to get painted anyway. Got a non nsn 4 prong, a new old stock colt barrel, and all the accessories. Just need an another mk12 gas block and I'll be ready to assemble. Might use my older m4a1 dd ris ii with the old style bottom half and save this one for another build. Upper is a colt cerro with a purplish hue.
https://www.ar15.com/media/mediaFiles/471387/IMG_0183_jpeg-3545028.JPG
how much did the su-237 run you? gonna run one on my prototype build

@thatARMSguy
i found this one minus the red dot mount for like $875 iirc. Then I got lucky and found the correct mount for like $75. Got the mrds instead of the docter. Tanodized docters are getting pricy and hard to find. But you should be able to find a complete one with a docter for $1175-$1400 depending on condition and seller.
Who said that?
5/31/2025 1:36:55 AM EDT
[#7]
Quote History
Originally Posted By thatARMSguy:
When would FDE NT4s have started to enter inventory? A tan one would look good with my build but if they weren't around in 2006 I'll go for black instead
View Quote

Nobody know the color once you've rattle canned it....
5/31/2025 2:01:28 AM EDT
[#8]
Quote History
Originally Posted By ThatGuy01:
Why is there an upper with a folding front sight behind the FSB?
View Quote

Don't question them about it.  I just had to rebarrel all those receivers.
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
5/31/2025 7:49:07 AM EDT
[#9]
BTDT. Got it.
6/1/2025 7:16:07 PM EDT
[Last Edit: aerospaceguy][Edited] [#10]
Quote History
Originally Posted By Combat_Diver:

Don't question them about it.  I just had to rebarrel all those receivers.
View Quote


damn. i hate removing just the 6 screws on the ris i can only imagine doing more than 1 rail lol.
mostly cause whatever tool i use hits the reciever and doesnt go straight so im always too scared of striping the screws or rounding the hex portion out.
what tool do you use for the 6 bolts? im assuming a long allen? or anything electric?

cant really see the forge markings on those uppers any chance you can let us know? i think i see some C BAFE and C cerro maybe? kind of hard to tell with them being painted and not focused on those areas.
6/1/2025 7:23:20 PM EDT
[#11]
Long t-handled ball-end hex wrench.
God will not look you over for medals, diplomas, or degrees – but for scars
6/1/2025 8:07:10 PM EDT
[#12]
Quote History
Originally Posted By SecretSquirell:
Long t-handled ball-end hex wrench.
View Quote



I like this one and it’s cheap

Attached File
6/1/2025 8:12:31 PM EDT
[#13]
Quote History
Originally Posted By ChemTrailZ:



I like this one and it’s cheap

https://www.ar15.com/media/mediaFiles/388771/IMG_0241_jpeg-3554145.JPG
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By ChemTrailZ:
Originally Posted By SecretSquirell:
Long t-handled ball-end hex wrench.



I like this one and it’s cheap

https://www.ar15.com/media/mediaFiles/388771/IMG_0241_jpeg-3554145.JPG

Eklind is a great brand and US-made.
God will not look you over for medals, diplomas, or degrees – but for scars
6/1/2025 9:11:54 PM EDT
[#14]
Quote History
Originally Posted By ChemTrailZ:



I like this one and it’s cheap

https://www.ar15.com/media/mediaFiles/388771/IMG_0241_jpeg-3554145.JPG
View Quote



What’s the length?
6/1/2025 9:25:24 PM EDT
[#15]
Quote History
Originally Posted By LongTrang:



What’s the length?
View Quote


Total length is just over 9 5/8, minus t handle it’s just over 7 5/8

6/1/2025 10:02:02 PM EDT
[#16]
Quote History
Originally Posted By NickOTime:

Nobody know the color once you've rattle canned it....
View Quote
Just want to make sure it's gonna look correct as the paint wears off. I might paint the base rifle, but not the rail or accessories. The RIS II test rifles were Block Is that got rail swaps and Phased Replacement parts like the LA/5 and optics, so those parts would still be brand new and unpainted. Also the rail I've got was combat issued and is probably the only one of its kind, so I'm not messing that up.
Collector, historian, and enthusiast of A.R.M.S. rails, mounts, and accessories.
6/1/2025 11:29:07 PM EDT
[#17]
Took the Razor off, it’s temporarily filling in on my MK12 since I’m between optics on that rifle.

So the CompM4s is back on. I also swapped the AFG for a Tango Down stubby. I’ve never been a big fan of the AFG. It does look cool on a Block II FSP but I just prefer a VFG.



6/2/2025 12:46:25 AM EDT
[Last Edit: aerospaceguy][Edited] [#18]
Nice! thanks all of you for tools used ive been using a small allen wrench or screwdriver with allen bit and have always had issues i guess the longer t handle is the way to go, ill have to add one to my tools
6/2/2025 3:22:50 AM EDT
[#19]
Quote History
Originally Posted By aerospaceguy:


damn. i hate removing just the 6 screws on the ris i can only imagine doing more than 1 rail lol.
mostly cause whatever tool i use hits the reciever and doesnt go straight so im always too scared of striping the screws or rounding the hex portion out.
what tool do you use for the 6 bolts? im assuming a long allen? or anything electric?

cant really see the forge markings on those uppers any chance you can let us know? i think i see some C BAFE and C cerro maybe? kind of hard to tell with them being painted and not focused on those areas.
View Quote

I’ll see if I have better pics of the receivers. That was back in 2019

Here’s my 5/32 T handle. Our shop on Bargram had a long one for ratchet or cordless drill. Also use the PRI M16/AR15 mount to bridge the flattop receiver and RIS II together keeping them aligned. Just tighten the screws and it stays straight

Attached File
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/2/2025 1:22:06 PM EDT
[#20]
Disassembling, cleaning and rebuilding these guns.  
Attached File

Attached File

Attached File


De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/3/2025 9:26:29 AM EDT
[#21]

6/4/2025 10:57:03 AM EDT
[#22]
Attached File
6/4/2025 11:01:19 AM EDT
[#23]
Originally Posted By ChemTrailZ:



I like this one and it’s cheap

https://www.ar15.com/media/mediaFiles/388771/IMG_0241_jpeg-3554145.JPG
View Quote

Originally Posted By Combat_Diver:

I’ll see if I have better pics of the receivers. That was back in 2019

Here’s my 5/32 T handle. Our shop on Bargram had a long one for ratchet or cordless drill. Also use the PRI M16/AR15 mount to bridge the flattop receiver and RIS II together keeping them aligned. Just tighten the screws and it stays straight

https://www.ar15.com/media/mediaFiles/32677/IMG_8510_jpeg-3554361.JPG
View Quote

Attached File
"All welchers should be removed from the EE".-Aimless
6/4/2025 11:10:29 AM EDT
[#24]


6/4/2025 10:10:37 PM EDT
[#25]
Quote History
View Quote View All Quotes
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Quote History
Originally Posted By TGWLDR:
Originally Posted By ChemTrailZ:



I like this one and it’s cheap

https://www.ar15.com/media/mediaFiles/388771/IMG_0241_jpeg-3554145.JPG

Originally Posted By Combat_Diver:

I’ll see if I have better pics of the receivers. That was back in 2019

Here’s my 5/32 T handle. Our shop on Bargram had a long one for ratchet or cordless drill. Also use the PRI M16/AR15 mount to bridge the flattop receiver and RIS II together keeping them aligned. Just tighten the screws and it stays straight

https://www.ar15.com/media/mediaFiles/32677/IMG_8510_jpeg-3554361.JPG

https://www.ar15.com/media/mediaFiles/416992/Screenshot_20250604_095741_Gallery_jpg-3555877.JPG

Same ones I have, I think based off of CD'd recommendation a long time ago. Has served me well.
6/5/2025 9:27:09 AM EDT
[#26]
Quote History
Originally Posted By ChemTrailZ:


Total length is just over 9 5/8, minus t handle it’s just over 7 5/8

View Quote


Thanks!
6/7/2025 12:18:00 AM EDT
[#27]
Quote History


CD, I recently got my hands on a surplus upper. Trying to clean the carbon and copper residue off the surefire. Tracking it doesn’t affect the firearm, but still enjoy the project. Any recommendations?
6/7/2025 1:47:24 AM EDT
[#28]
Quote History
Originally Posted By RTrover:


CD, I recently got my hands on a surplus upper. Trying to clean the carbon and copper residue off the surefire. Tracking it doesn’t affect the firearm, but still enjoy the project. Any recommendations?
View Quote

I'll put it into the solvent tank and let sit for couple days.
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/8/2025 9:34:11 PM EDT
[#29]
Quote History
Originally Posted By RTrover:


CD, I recently got my hands on a surplus upper. Trying to clean the carbon and copper residue off the surefire. Tracking it doesn’t affect the firearm, but still enjoy the project. Any recommendations?
View Quote


I used Breakthrough Suppressor cleaner and soaked mine for about 24 hours and it came out damn good IMO. That said I only had about 1700 rounds on it at the time (all suppressed), but you could barely make out part of the SF logo before for context. I've used that stuff on muzzle devices more than any suppressor at this point.

Attached File
6/8/2025 10:28:32 PM EDT
[#30]
Quote History
Originally Posted By FDEinAZ:


I used Breakthrough Suppressor cleaner and soaked mine for about 24 hours and it came out damn good IMO. That said I only had about 1700 rounds on it at the time (all suppressed), but you could barely make out part of the SF logo before for context. I've used that stuff on muzzle devices more than any suppressor at this point.
https://www.ar15.com/media/mediaFiles/448400/thumbnail_IMG_2766_jpg-3559375.JPG
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By FDEinAZ:
Originally Posted By RTrover:


CD, I recently got my hands on a surplus upper. Trying to clean the carbon and copper residue off the surefire. Tracking it doesn’t affect the firearm, but still enjoy the project. Any recommendations?


I used Breakthrough Suppressor cleaner and soaked mine for about 24 hours and it came out damn good IMO. That said I only had about 1700 rounds on it at the time (all suppressed), but you could barely make out part of the SF logo before for context. I've used that stuff on muzzle devices more than any suppressor at this point.
https://www.ar15.com/media/mediaFiles/448400/thumbnail_IMG_2766_jpg-3559375.JPG



Thanks. Bought a bottle. Try to clean it up b4 re-attaching  
6/9/2025 8:41:16 PM EDT
[Last Edit: StealthGuy][Edited] [#31]
Found a select fire KAC ambi safety. MARSOC build is even more MARSOCier.

Attached File
6/11/2025 7:04:53 AM EDT
[Last Edit: Combat_Diver][Edited] [#32]
Trifecta with giggle switches
Attached File
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/11/2025 4:16:31 PM EDT
[#33]
Quote History
Originally Posted By Combat_Diver:
Trifecta with giggle switches
https://www.ar15.com/media/mediaFiles/32677/IMG_9054_jpeg-3560973.JPG
View Quote


What version of safety are those? I’m considering switching my ambi to the version used in 2008 time frame.
6/11/2025 4:55:58 PM EDT
[#34]
Quote History
Originally Posted By Combat_Diver:
Trifecta with giggle switches
https://www.ar15.com/media/mediaFiles/32677/IMG_9054_jpeg-3560973.JPG
View Quote



Peak block II
6/12/2025 1:57:24 AM EDT
[#35]
Quote History
Originally Posted By RTrover:


What version of safety are those? I’m considering switching my ambi to the version used in 2008 time frame.
View Quote

With tick
Attached File
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/14/2025 7:13:58 PM EDT
[#36]
Attached File


Will eventually get proper lower and can but finishing the M110 first.
6/15/2025 12:36:17 PM EDT
[#37]
What are the common flashlight setups for a block ii? I'm a bit overwhelmed at surefire offerings as it seems "surefire scout" is really a bunch of different models.
6/15/2025 1:48:57 PM EDT
[#38]
Quote History
Originally Posted By Mauser48A:
What are the common flashlight setups for a block ii? I'm a bit overwhelmed at surefire offerings as it seems "surefire scout" is really a bunch of different models.
View Quote


Funny. I was looking up the same thing last night. I have the scout pro… but I was curious as well as to what light was used in 2010 time frame. I assume SU-233???
6/15/2025 2:08:56 PM EDT
[#39]
Quote History
Originally Posted By RTrover:


Funny. I was looking up the same thing last night. I have the scout pro… but I was curious as well as to what light was used in 2010 time frame. I assume SU-233???
View Quote


I plan on shooting this rifle a lot and the light won't be used much, I honestly might just throw a streamlight on it.
6/15/2025 5:09:27 PM EDT
[#40]
Quote History
Originally Posted By RTrover:


Funny. I was looking up the same thing last night. I have the scout pro… but I was curious as well as to what light was used in 2010 time frame. I assume SU-233???
View Quote

M600A/C with KL4 or KX2C heads would be g2g as would M620C/V. Saw an M951 and M900 here and there. SU233 would be the most common though.
6/16/2025 3:52:12 PM EDT
[#41]
How important is perfect timing of the surefire 4 prong? .013" of shim gets me right at bdc before torque and with .015" I'm at about 5:30 after torque. No combination of shims available to make .014".
6/16/2025 5:41:11 PM EDT
[#42]
Quote History
Originally Posted By Mauser48A:
How important is perfect timing of the surefire 4 prong? .013" of shim gets me right at bdc before torque and with .015" I'm at about 5:30 after torque. No combination of shims available to make .014".
View Quote

It doesn't matter at all
6/16/2025 6:24:54 PM EDT
[#43]
Quote History
Originally Posted By BurtSaun1049:

It doesn't matter at all
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By BurtSaun1049:
Originally Posted By Mauser48A:
How important is perfect timing of the surefire 4 prong? .013" of shim gets me right at bdc before torque and with .015" I'm at about 5:30 after torque. No combination of shims available to make .014".

It doesn't matter at all

Except we now know its not perfectly TDC and we will mock you relentlessly. . .

JK just send it!
Originally Posted By bradpierson26:
So I know you're a SF whore . . . . .
6/17/2025 2:30:23 AM EDT
[#44]
Quote History
Originally Posted By BurtSaun1049:

It doesn't matter at all
View Quote

Torque is 20-30lbs, I set mine at 25 lbs.  What are you torquing to?  Does BDC fall within that?
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/17/2025 1:07:53 PM EDT
[#45]
Quote History
Originally Posted By Combat_Diver:

Torque is 20-30lbs, I set mine at 25 lbs.  What are you torquing to?  Does BDC fall within that?
View Quote



My tool doesnt have a 1/2" drive to be able to put a torque wrench on unfortunately. With .015" of shim there's no way of it lining up perfectly without far exceeding that torque range. Even then I still don't think you could get it to line up.
6/17/2025 1:45:13 PM EDT
[#46]
SHORT Act has been added to the BBB along with the HPA.  Call your Senators to support this gets passed!

SHORT Act would remove SBS, SBR and AOW from the NFA.  HPA would remove suppressors from the NFA.  Only thing NFA would still require a TAX stamp for would be Full Auto and DDs.  Clones getting closer!
De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15,16,22,23,24&25'
Afghanistan: 09,10,11,14,17,18,19,20&21'
6/17/2025 5:46:21 PM EDT
[#47]
Quote History
Originally Posted By Combat_Diver:
SHORT Act has been added to the BBB along with the HPA.  Call your Senators to support this gets passed!

SHORT Act would remove SBS, SBR and AOW from the NFA.  HPA would remove suppressors from the NFA.  Only thing NFA would still require a TAX stamp for would be Full Auto and DDs.  Clones getting closer!
View Quote

God will not look you over for medals, diplomas, or degrees – but for scars
6/17/2025 11:40:53 PM EDT
[#48]
Quote History
Originally Posted By Combat_Diver:
SHORT Act has been added to the BBB along with the HPA.  Call your Senators to support this gets passed!

SHORT Act would remove SBS, SBR and AOW from the NFA.  HPA would remove suppressors from the NFA.  Only thing NFA would still require a TAX stamp for would be Full Auto and DDs.  Clones getting closer!
View Quote

Hell yeah!
6/18/2025 2:06:57 PM EDT
[#49]
That's great news!  Might convince me to finally get into SBRs...
6/21/2025 12:30:54 PM EDT
[#50]
Untitled by harry nalgas, on Flickr" />

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