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.45 ACP Conversion Guide (Page 9 of 22)
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Link Posted: 9/19/2009 1:20:37 PM EDT
[#1]
Originally Posted By jeepfreak:
I was wondering what type buffers people are using on the AR45.

I have an integrally suppressed AR45 and am experimenting with various buffers. I'm thinking about one of the M16 rate reducing buffers, or one of the Enidine hydraulic units. Has anyone used these yet on an AR45?
How do they compare to a heavy buffer?
I'm using an A2 stock.
Thanks,
J.D.


I am running the same thing with a standard buffer in my A2. Have you tried anything that was a noticeable improvement? I have not had any problems with my set up with quite a few rounds through it.

Joe

Link Posted: 9/19/2009 8:44:41 PM EDT
[#2]
I've used a standard A2 buffer with an A2 stock, and then a carbine buffer, and a 9mm buffer in a collapsible stock.  I keep getting a lot of spring noise from the shooters perspective, and I feel like the impact of the buffer on the back of the buffer extension is violent.  I'll probably order one of the hydraulic buffers, and I'll let you all know how it goes.

Link Posted: 9/19/2009 9:44:03 PM EDT
[#3]
Originally Posted By jeepfreak:
I've used a standard A2 buffer with an A2 stock, and then a carbine buffer, and a 9mm buffer in a collapsible stock.  I keep getting a lot of spring noise from the shooters perspective, and I feel like the impact of the buffer on the back of the buffer extension is violent.  I'll probably order one of the hydraulic buffers, and I'll let you all know how it goes.

http://i213.photobucket.com/albums/cc91/jddaniels3/ar45.jpg


Cool, I would like to hear how it works out. Nice picture of your set up, who did your suppressor?

Here is a picture of my set up with an SRT integral suppressor.



Joe

Link Posted: 9/20/2009 2:30:54 AM EDT
[#4]
Originally Posted By TANGOCHASER:
The olypmic Arms .45 upper was designed to use a standard buffer. I personally use a Hahn brand heavy buffer. It does slow the action down, keeping it in battery a little longer and therefore a little cleaner. It does help get the front sight back on target faster as well. I have not used any of the hydraulic type buffers.


I got started with a Cav Arms Lower, and had to use the "HEAVY BUFFER" for it.....

When I got my AR45 (A GREAT LOWER, BTW), I just transfered everything over.

Shoots great, but, I don't shoot full auto either....

Link Posted: 9/20/2009 10:34:21 PM EDT
[Last Edit: Desert_AIP] [#5]
Finally changed the handguard on my AR45 to a midlength configuration.
Drilled and tapped the gas block pin holes for set screws so I could move it forward.
With the 9" handguard the rear of the gas block still registers on the forward 0.75" gasblock seating area.
I really like the new MI T series handguard.

Link Posted: 9/22/2009 8:16:46 AM EDT
[#6]
Originally Posted By TN-MadDog:
Cool, I would like to hear how it works out. Nice picture of your set up, who did your suppressor?
Here is a picture of my set up with an SRT integral suppressor.
Joe


I'll let you know how it works out.  I had Liberty Suppressors out of Trenton GA build the can for me.  It works pretty well I think.  I see you're in TN, roughly which part.  I'd be interested in seeing your build sometime.
Link Posted: 9/22/2009 1:13:54 PM EDT
[#7]
Originally Posted By jeepfreak:
Originally Posted By TN-MadDog:
Cool, I would like to hear how it works out. Nice picture of your set up, who did your suppressor?
Here is a picture of my set up with an SRT integral suppressor.
Joe


I'll let you know how it works out.  I had Liberty Suppressors out of Trenton GA build the can for me.  It works pretty well I think.  I see you're in TN, roughly which part.  I'd be interested in seeing your build sometime.


I'm in the Chattanooga area. It would be fun to compare sometime. I shoot at the Chattanooga Rifle Club which is on the north side of town. Are you any where near here?

Joe

Link Posted: 10/30/2009 12:15:51 PM EDT
[#8]
Based on the most recent comments in the New Products thread in the Black Dog Machine section of the Industry Forums, it looks like BDM is working on the Oly pistol caliber mags and might be nearing the end of the R&D process.
Link Posted: 11/1/2009 11:51:34 PM EDT
[#9]
Well this may be my first post here but I have been watching the ar .45acp for a while now... I always knew this could be done, so where can we buy a barrel and gas system and how much? Pistol length?
Link Posted: 11/2/2009 2:41:36 PM EDT
[#10]
Originally Posted By jonmalibuss:
Well this may be my first post here but I have been watching the ar .45acp for a while now... I always knew this could be done, so where can we buy a barrel and gas system and how much? Pistol length?


At the moment, all of the blowback type conversions are pretty much dependent on Oly Arms for bolts, barrels, ejectors, etc.  Oly's system is patented, so they are the only supplier for parts.

Ron Williams has a DI gas op upper running and is building some guns on a custom basis I think, and some other guys have been playing around with that too.
Link Posted: 11/3/2009 10:04:08 AM EDT
[#11]
Originally Posted By crazytuco:
Based on the most recent comments in the New Products thread in the Black Dog Machine section of the Industry Forums, it looks like BDM is working on the Oly pistol caliber mags and might be nearing the end of the R&D process.


This would be awsome I would love to test one in my system.
Link Posted: 11/3/2009 10:06:11 AM EDT
[#12]
Originally Posted By mentalstampede:
Originally Posted By jonmalibuss:
Well this may be my first post here but I have been watching the ar .45acp for a while now... I always knew this could be done, so where can we buy a barrel and gas system and how much? Pistol length?


At the moment, all of the blowback type conversions are pretty much dependent on Oly Arms for bolts, barrels, ejectors, etc.  Oly's system is patented, so they are the only supplier for parts.

Ron Williams has a DI gas op upper running and is building some guns on a custom basis I think, and some other guys have been playing around with that too.


I have been building the DI45 as fast as I can. The 7.62x25 has taken front stage right now.
Link Posted: 11/3/2009 9:40:48 PM EDT
[#13]
...now what did he mean by playing???
Link Posted: 11/10/2009 3:26:14 PM EDT
[Last Edit: TonyTDMD] [#14]
MGI is shipping the colt 9mm style bolt and barrel for the .45 too, apparently. I just bought one. I'll try to get some pics if anyone wants to check out the barrel and Bolt.
Link Posted: 11/20/2009 8:49:00 AM EDT
[#15]
So is Oly even selling .45 uppers anymore?  I see them listed on their site but it says you can't order online.
Link Posted: 11/20/2009 9:45:27 PM EDT
[Last Edit: frog5215] [#16]
I suspect it's still a magazine problem.
They can't sell an upper without mags, their mags for .45 are modified uzis, which are prohibitively expensive BEFORE modification. So they don't keep these built up.
I ordered mine by phone either two or three years ago, the guy started to give me the "we don't have mags" song and dance, which I interrupted with:" I have a Cav Arms lower and a box full of GG mags".
About 2 weeks later the box came to the office.

Tangochaser, I would like to take this opportunity to thank you for all your help, R&D, etc.
Link Posted: 11/26/2009 3:44:59 PM EDT
[#17]
Tangochaser, I would like to take this opportunity to thank you for all your help, R&D, etc.


You're welcome. Pleasures all mine.
Link Posted: 12/2/2009 12:42:00 PM EDT
[#18]
Two questions I had about the DI .45 uppers that I was hoping someone could answer....

1.  Any reason an Oly style blowback barrel cant be used to create a DI upper.....i.e.  drill the gas port for gas tube, install barrel onto modifed barrel extension, use standard carrier/ bolt set up for .45 acp ??

2.  What is the shortest barrel that has been used on a DI upper ??  

   

    The reason I ask is that I have a 7.5 Oly style upper that I would like to switch over to DI, but still use my custom barrel.

Any thoughts ??

Thanks.

Link Posted: 12/2/2009 12:53:25 PM EDT
[#19]
Oly barrels can be converted to DI. The barrel extension is threaded the same as a standard Ar barrel extension. The barrel can be drilled for the gas port as well. I know of at least one that has been converted already.
Link Posted: 12/16/2009 4:06:24 PM EDT
[#20]
Forgive me if this has been asked, but I didn't see it. The Uzi and GG mags are double stack mags and thus feed from the sides. I want to get a .45ACP upper and use MGI's Glock 21 magwell. The G21 mag will feed from the center. Where can I get a barrel that will allow this mag to reliably feed?  Would a .450 Tromix or a .450 Bushmaster barrel work?
Link Posted: 12/16/2009 5:37:03 PM EDT
[#21]
GGs are center-feed mags.
Link Posted: 12/19/2009 9:05:08 PM EDT
[#22]
Anyone know where I can find an OLY -45 upper? I have a Bazooka Brothers lower , just need an upper!
Link Posted: 12/21/2009 4:50:26 PM EDT
[#23]
Originally Posted By SNAFU-M1A:
So is Oly even selling .45 uppers anymore.
 Yes but your need to tell Oly you have your own Uzi mags.  Just got a 10mm upper from them two weeks ago.
Link Posted: 12/28/2009 2:04:59 PM EDT
[#24]
So what is the standard threading for a 45 barrel? Are FH custom, or is there ready made ones out there that will work?

Looking to pin a 5.5 to bring up to legal length until I get an SBR to go through (once I get out of CA) and then would like to put on a more standard FH...just curious what my options are.
Link Posted: 12/28/2009 2:36:22 PM EDT
[#25]
Originally Posted By RolandofGilead:
So what is the standard threading for a 45 barrel? Are FH custom, or is there ready made ones out there that will work?
Looking to pin a 5.5 to bring up to legal length until I get an SBR to go through (once I get out of CA) and then would like to put on a more standard FH...just curious what my options are.


5/8-24 although some muzzel devices may still need to be opened up slightly for .45acp to pass through.
Link Posted: 12/28/2009 3:15:43 PM EDT
[#26]



Originally Posted By jonmalibuss:



Originally Posted By RolandofGilead:

So what is the standard threading for a 45 barrel? Are FH custom, or is there ready made ones out there that will work?

Looking to pin a 5.5 to bring up to legal length until I get an SBR to go through (once I get out of CA) and then would like to put on a more standard FH...just curious what my options are.




5/8-24 although some muzzel devices may still need to be opened up slightly for .45acp to pass through.


Cool, thanks





 
Link Posted: 12/28/2009 9:12:25 PM EDT
[#27]
So I'm not having much luck looking for a 5.5" FH for a .308, anybody know where to get one?





Also wondering how a Noveske KX3 brake would work with .45...
Link Posted: 1/2/2010 12:09:43 PM EDT
[#28]
Originally Posted By TonyTDMD:
MGI is shipping the colt 9mm style bolt and barrel for the .45 too, apparently. I just bought one. I'll try to get some pics if anyone wants to check out the barrel and Bolt.


Hi Tony, did your MGI 45 barrel and bolt ever arrive, as I'd like to confirm these are the colt 9mm style in 45 and not the Oly style, thanks steve
Link Posted: 1/2/2010 11:33:23 PM EDT
[Last Edit: Mad-Machinist] [#29]
Just thought I'd share a video of my AR45....based on a CNCguns lower.......... 25 round mag dump...........with my design upper..........well over 1000 rounds as of this weekend with no malfunctions Jan 2 2010

Link Posted: 1/3/2010 12:37:19 PM EDT
[#30]
Originally Posted By Mad-Machinist:
Just thought I'd share a video of my AR45....based on a CNCguns lower.......... 25 round mag dump...........with my design upper..........well over 1000 rounds as of this weekend with no malfunctions Jan 2 2010

<a href="http://s368.photobucket.com/albums/oo121/MadMachinist/?action=view¤t=MOV03327.flv" target="_blank">http://i368.photobucket.com/albums/oo121/MadMachinist/th_MOV03327.jpg</a>

Nice

Videos are the best. Now I need to get one of these new lowers & SBR it. They will make the 50GI, 40S&W & 10mm so much easyer(I mean fun)
Mag dump
Link Posted: 1/6/2010 1:12:56 PM EDT
[Last Edit: limeytwo] [#31]
This question is for Ron W and Tango Chaser or others with knowlege of available 45acp systems.

I'm specifically looking for info with regards to DI 45 uppers or blow back uppers in the colt 9mm design (supposidly now being sold by MGW) and specifically "NOT the OLY" style with the silly spring ejector system.

Are all the uppers in 45acp capable of operating on any style of 45 lower, ie:

BAZ 45 Grease gun lower.

CNC AR45 Grease gun lower.

MGW Grease gun mag well lower, with ejector for Colt 9mm style blow back 45acp bolt and barrel. or no ejector for Ron's DI upper

I am also looking on the possibility of using a registered M16 receiver with either:

a mid mounted SNS Sten mag block with or without ejector (sten mags with 45acp hollow points) depending on wether a  Ron Williams DI upper or Colt 9mm style blow back 45 bolt and barrel from MGW are used.

or a standard Colt / Rock river style mag block and 45acp UZI mags with the ejector removed for a Ron Williams DI upper or left in place for a Colt 9mm style 45acp bolt and barrel from MGI

sorry for so many questions, I would just like to know what combinations are possible before I buy an upper, lower or both, thanks in advance.
Link Posted: 1/6/2010 6:31:47 PM EDT
[#32]
Originally Posted By limeytwo:
This question is for Ron W and Tango Chaser or others with knowlege of available 45acp systems.

I'm specifically looking for info with regards to DI 45 uppers or blow back uppers in the colt 9mm design (supposidly now being sold by MGW) and specifically "NOT the OLY" style with the silly spring ejector system.

Are all the uppers in 45acp capable of operating on any style of 45 lower, ie:

BAZ 45 Grease gun lower.

CNC AR45 Grease gun lower. My 45DI uppers will work with all the 45 lowers.
MGW Grease gun mag well lower, with ejector for Colt 9mm style blow back 45acp bolt and barrel. or no ejector for Ron's DI upper My bolt has the ejector built in.
I am also looking on the possibility of using a registered M16 receiver with either:

a mid mounted SNS Sten mag block with or without ejector (sten mags with 45acp hollow points) depending on wether a  Ron Williams DI upper or Colt 9mm style blow back 45 bolt and barrel from MGW are used. I would rather use pps43 mags than sten. The pps holds 14rnds of 45. How about the sten?

or a standard Colt / Rock river style mag block and 45acp UZI mags with the ejector removed for a Ron Williams DI upper or left in place for a Colt 9mm style 45acp bolt and barrel from MGI If it feeds 45 it will work with my system.

sorry for so many questions, I would just like to know what combinations are possible before I buy an upper, lower or both, thanks in advance.


Hope I dident miss anything.
Link Posted: 1/8/2010 1:18:58 AM EDT
[Last Edit: TANGOCHASER] [#33]
Sten mags hold 15-17 rds. Requires playing with the spring length. 17rds fit with a reduced length spring but the spring is completely bottomed out when fully loaded. 15 rds works much better. Limited to HP bullets due to OAL. Advantage is obviously, works with standard 9mm Sten magwell adapters. I haven't had the opportunity to try pps mags, so I don't have a direct comparison.

Check youtube ".45 in a Sten" and you can see me shooting .45HP from a Sten mag and getting pissy with my wife.
Link Posted: 1/8/2010 11:55:21 AM EDT
[Last Edit: limeytwo] [#34]
Thanks Ron and Tangochaser for your promp replys,

From what you'r saying Ron, I gather that your DI upper does not care if the magazine is in the central position via sten or colt 9mm style blocks or in the forward position using either Olympic 45acp mags or any of the dedicated receivers like the MGW grease gun magwell, the CNC AR45 or the BAZ45 lowers.

Also Ron is there any advantage to your DI upper as compaired to a blow back system, ie cleaner operation, less blow back when suppresed, higher velocity, higher round count to failure due to deposit build up, or anything else?

And for Tangochaser, have you ever heard of anyone using standard Colt style one piece magwell blocks and Uzi factory 45acp 16rnd mags modded with a notch for the mag catch just like you do to the Uzi 9mm mags.

thaks again for your previous answers, Steve (limeytwo)


Link Posted: 1/8/2010 11:54:21 PM EDT
[Last Edit: Mad-Machinist] [#35]
Since I started building these.....I'm up over 2000 rounds with my upper on a CNC guns AR45 lower without a malfinction.Yes it does run cleaner but as short as the gas system is...it does foul more than a 5.56 gun.....but I have gone over 400 rounds without cleaning. Proper lubrication certianly helps  I have been using slip2000 and have noticed easier cleaning since using it. I can't speak authoritatively on the feed of other systems, as I've only had money to test the system on one platform extensively, but I did run it with the mag well block I build for PPS43 mags in my 7.62 x 25 with encouraging results. (I didn't make a new follower for the 43 mag but it did shoot. I have also run it on a rear feed with a 20 rnd AR mag with a delring spaceer/feed ramp integral to the mag....requires the manufacture of a new follower and spring. It is just a personal preference thing with me...I prefer the unmodified M3 mags...cheap...easily available and run great and I value consistency.....I know I can grab any grease gun mag and run with it.....at least so far...and I'm up to 25 mags... a mix of new production and some pretty beat up looking GI mags.

Rudy
Link Posted: 1/9/2010 4:28:30 AM EDT
[#36]
And for Tangochaser, have you ever heard of anyone using standard Colt style one piece magwell blocks and Uzi factory 45acp 16rnd mags modded with a notch for the mag catch just like you do to the Uzi 9mm mags.


I have not but anything is possible. Good luck finding an UZI .45 mag for under $100.
Link Posted: 1/9/2010 8:50:03 AM EDT
[Last Edit: limeytwo] [#37]
Once again thanks for the promp replys

I guess I have good luck, I just picked up a bunch of Uzi IMI 45acp 16rnd mags for a good price, I bought all he had, as a investment,
Link Posted: 1/9/2010 8:52:24 AM EDT
[Last Edit: limeytwo] [#38]
OOP's double post!
Link Posted: 1/16/2010 4:41:45 PM EDT
[#39]
Pardon my ignorance......... but the greasegun mag guns are the most reliable?
Link Posted: 1/16/2010 9:47:34 PM EDT
[Last Edit: Mad-Machinist] [#40]
Not sure I would say the most reliable but with a gas upper definitely an improvement over the blowbacks ...IMHO.......but they do run exceptionally well.  I prefer the front feed position of the GG mag guns....closer to the chamber mouth...less to go wrong. Plus the added benefit of magazines that are plentiful and relatively inexpensive. I just bought a single 10 round Oympic mag to test a .45 pistol upper on the only AR pistol I have.......and it was 100 bucks....... I have over 30 GG mags and I paid an average of 17 dollars apiece.
The advantages of gas uppers....run cleaner, eliminates the random out of battery discharge, and no issues with add on ejectors.  With the AR 45 lower all you have done is change the magwell, yes the gas system is shorter and the bolt is opened up......but the design is basically the same as a 5.56 AR and the troubleshooting is pretty much the same.
Link Posted: 1/17/2010 8:58:02 AM EDT
[#41]
Originally Posted By Mad-Machinist:
Not sure I would say the most reliable but with a gas upper definitely an improvement over the blowbacks ...IMHO.......but they do run exceptionally well.  I prefer the front feed position of the GG mag guns....closer to the chamber mouth...less to go wrong. Plus the added benefit of magazines that are plentiful and relatively inexpensive. I just bought a single 10 round Oympic mag to test a .45 pistol upper on the only AR pistol I have.......and it was 100 bucks....... I have over 30 GG mags and I paid an average of 17 dollars apiece.
The advantages of gas uppers....run cleaner, eliminates the random out of battery discharge, and no issues with add on ejectors.  With the AR 45 lower all you have done is change the magwell, yes the gas system is shorter and the bolt is opened up......but the design is basically the same as a 5.56 AR and the troubleshooting is pretty much the same.


This is why I decided to design & build the first fully functional DI45
Link Posted: 1/17/2010 5:58:02 PM EDT
[#42]
Actually I have heard wind of a gunsmith in Nevada that did it back in the late 80's early 90's. From my understanding he only made three on M16 lowers as law enforcement demo samples......as soon as I can get more info 'll post it.
Link Posted: 1/20/2010 3:31:36 PM EDT
[#43]
I did get the MGI bolt and barrel in, and they are exactly the colt 9mm style. See thread here: http://www.ar15.com/forums/topic.html?b=3&f=15&t=477707
Link Posted: 1/20/2010 10:57:17 PM EDT
[Last Edit: limeytwo] [#44]
Thanks TonyTDMD for letting me know the barrel and bolt style,  just one question, was the bolt cut as an M16 or AR15 bolt, thanks again Steve
Link Posted: 1/20/2010 11:21:38 PM EDT
[#45]
M16
Link Posted: 2/12/2010 10:11:43 AM EDT
[#46]
Couple of questions regarding the AR45 uppers: (please pardon my redundancy if this has been asked recently) These questions are assuming the use of a Grease Gun magazine capable lower receiver will be used.

Is there a preferred system that works better than the other if a suppressor is going to be used? Does the gas operated system work better than the blow back system  when using a suppressor? Or the other way around?

What is the thread pitch on the end of these barrels?

Are the AR45 uppers featured on the bazooka brothers site available in a "true" 16 inch barrel? I don't know this for a fact, but I'm guessing that you can not have the end of the 5 inch flash hider threaded to fit a suppressor? Regardless of whether I could do this, I wouldn't want to because I would prefer something that looks more traditional than the extended flash hider.

Thank you very much.




Link Posted: 2/13/2010 3:31:53 AM EDT
[#47]
The uppers featured on the Bazooka Brothers Website are 11.5" with a permanently attached 5" flash hider. We are now offering uppers with 16" barrels as well. The 16" barrels can be ordered with or without threads and flash hiders. The  barrels are typically  threaded 5/8"X24 but custom threading is avalable
Link Posted: 2/23/2010 3:41:20 PM EDT
[#48]
On the Bazooka Bros. upper,  Has anyone shot steel cased ammo, would there be any issues shooting steel cased ammo?

Vince
Link Posted: 2/24/2010 12:48:39 PM EDT
[#49]
It has been my experience that steel cased Russian ammo does not produce enough gas to reliably operate a DI system. It will cycle the action but not consistently.
Link Posted: 3/4/2010 6:16:54 PM EDT
[#50]
Anyone know of a BAZ 45 lower for sale, or how to get a hold of Bazooka bros? I tried their E-mail.but for some reason can't get hold of them.

Vince
Page / 22
.45 ACP Conversion Guide (Page 9 of 22)
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