Who makes B&T style 3-lug .45 acp barrel for AR? - Page 1

AR Sponsor:

[ARCHIVED THREAD] - Who makes B&T style 3-lug .45 acp barrel for AR? (Page 1 of 2)

Posted: 8/12/2017 7:54:36 PM EDT

With the release of the new 3-lug mount from Silencerco that works with B&T 3-lug barrel, who makes B&T style 3-lug .45 acp barrel for AR?

Thanks

Posted: 8/13/2017 10:48:25 AM EDT

[#1]

Following...

Posted: 8/14/2017 10:03:01 AM EDT

[#2]

I've never seen a .45 with a 3-lug mount. The closest was the UMP, but that has a different QD mount system.

Posted: 8/14/2017 8:03:55 PM EDT

[#3]

Quote History

Quoted:
I've never seen a .45 with a 3-lug mount. The closest was the UMP, but that has a different QD mount system.

View Quote

Well I may be assuming, but something should fit this-
3-Lug Mount AC2448

Posted: 9/21/2017 7:56:03 AM EDT

[#4]

Closest I can think of is using something like the Griffin Armament .45 3lug adapter on a regular threaded barrel

Posted: 9/21/2017 8:36:23 AM EDT

[#5]

Interesting.

Best bet would probably be Macon Armory. You could also contact CMMG.

Posted: 9/30/2017 1:01:45 PM EDT

[#6]

Anyone have more info?

Posted: 9/30/2017 2:15:11 PM EDT

[#7]

Been researching this myself. Short answer, I don't believe a .45 AR barrel currently exists that has B&T spec 3-lugs. Two options would be to buy an APC barrel and machine an AR barrel extension onto it (if even possible) or have a custom barrel made from scratch with B&T spec 3-lugs. Either choice would be $$$

I'm surprised SiCo would make an adapter for only one specific firearm so I'm hoping it's just a matter of time before we see AR barrels and/or screw-on adapters with B&T spec 3-lugs.

I like the compact size of the SiCo mount and would get one if a matching barrel existed. I will prob go the Griffin Armament route and use their screw-on 3-lug adapter and mount. They have the same specs as an HK 10mm/.40 cal 3-lug barrel which is more narrow than the B&T but it's apparently bored out for 45.

Posted: 9/30/2017 4:49:49 PM EDT

[#8]

Quote History

Quoted:
Interesting.

Best bet would probably be Macon Armory. You could also contact CMMG.

View Quote

I'll be contacting Silencerco to see if they can supply a drawing with specifications for their new adapter....we'd love to make one.....

Posted: 9/30/2017 6:16:39 PM EDT

[#9]

Quote History

Quoted:

I'll be contacting Silencerco to see if they can supply a drawing with specifications for their new adapter....we'd love to make one.....

View Quote

And I'd love to buy one the minute you do!!

Posted: 9/30/2017 7:10:13 PM EDT

[#10]

Quote History

Quoted:

And I'd love to buy one the minute you do!!

View Quote

I am in for one or two also.

Posted: 9/30/2017 7:49:17 PM EDT

[#11]

What length would y'all like.....I was thinking something that put the lug in front of a 7 inch handguard?????

Posted: 10/1/2017 1:04:06 AM EDT

[#12]

Quote History

Quoted:
What length would y'all like.....I was thinking something that put the lug in front of a 7 inch handguard?????

View Quote

Yes please! Exactly what I'm looking for Rudy.

Any guesstimate on cost?

Posted: 10/1/2017 1:52:51 AM EDT

[#13]

There is a local machine shop here in Oregon that makes 3lugs I can see if they make the 45 variant compatible with the SiCo mount.. going rate for their other 3 lugs is $65. I will ask and report.

Posted: 10/1/2017 4:04:38 AM EDT

[#14]

Quote History

Quoted:

I'll be contacting Silencerco to see if they can supply a drawing with specifications for their new adapter....we'd love to make one.....

View Quote

For what it's worth, the internet says B&T lug dimensions are the same as 9mm just with a larger OD forward of the lugs (0.6365")

Posted: 10/1/2017 10:42:07 AM EDT

[#15]

Quoted:

For what it's worth, the internet says B&T lug dimensions are the same as 9mm just with a larger OD forward of the lugs (0.6365")

View Quote

I think the internet is wrong....

.....I have seen 9mm adapters slightly smaller than the front behind the lugs.....and the suppressor was extremely unstable......Hopefully the fine folks at Silencerco will cooperate so we can get this right without a bunch of development....I'd love to make this a feature on the shorter Macon Armory barrels. Thanks for the info though....I will definitely research as much as possible.....

Posted: 10/1/2017 11:08:45 AM EDT

[#16]

Quote History

Quoted:

I think the internet is wrong....

.....I have seen 9mm adapters slightly smaller than the front behind the lugs.....and the suppressor was extremely unstable......Hopefully the fine folks at Silencerco will cooperate so we can get this right without a bunch of development....I'd love to make this a feature on the shorter Macon Armory barrels. Thanks for the info though....I will definitely research as much as possible.....

View Quote

Internet wrong? Never!

Yeah I'd love to see their spec sheet or even B&T's if they would release it. This barrel would be a fantastic option for lots of folks!

Posted: 10/1/2017 11:18:12 AM EDT

[#17]

I just emailed a member asking if he had a micrometer and could take some measurements....I have the 3 lug and form the pictures I have seen you may be correct with the lug dimensions being the same, and the barrel being enlarged before and after the lugs.....If I can get an example...I have a micrometer to measure diameter on three points....as well as an optical comparator to really nail down the dimensions.

Posted: 10/1/2017 11:50:33 AM EDT

[#18]

Rudy you've probably already read these but here's where I found those numbers:

https://www.ar15.com/forums/armory/45-3-lug-/20-471680/
https://www.ar15.com/forums/armory/45-Auto-3-Lug-Question/20-477200/

Hopefully Silencerco get back to you soon!

Posted: 10/17/2017 2:11:52 PM EDT

[#19]

Did we find someone who can make an adapter for this? When i emailed SilencerCo they told me that they dont plan to produce .45 3-lug thread-on adapters that will fit their 3-lug device.

Posted: 10/27/2017 9:27:44 AM EDT

[#20]

Any updates on this?

Posted: 11/8/2017 9:06:28 PM EDT

[#21]

any luck on this? sounds like there is quite a market for B&T compatible 45 3-lugs ... particularly for the UMP/USC crowd.

Posted: 11/9/2017 11:34:17 AM EDT

[#22]

What thread pitch are you guys looking for?
.578x28?
16x1 LH?

Posted: 11/9/2017 3:11:48 PM EDT

[#23]

I'd like to see one in .578x28 for attachment to a CMMG Guard barrel.

Posted: 11/9/2017 3:16:49 PM EDT

[#24]

Rudy - Any updates on making a complete B&T spec 3-lug AR barrel?

Posted: 11/9/2017 11:48:07 PM EDT

[#25]

Quote History

Quoted:
I'd like to see one in .578x28 for attachment to a CMMG Guard barrel.

View Quote

Got in touch with him, said he is planning to do a run of them soon™. I’ll check back in periodically and report more info as I get it. I’d estimate he is 3-4 weeks out.

Posted: 11/10/2017 1:46:40 AM EDT

[#26]

Quote History

Quoted:

Got in touch with him, said he is planning to do a run of them soon™. I’ll check back in periodically and report more info as I get it. I’d estimate he is 3-4 weeks out.

View Quote

That's great news! Will cost be the same as his other 3-lug adapters?

Posted: 11/10/2017 1:53:55 AM EDT

[#27]

Also, any chance of a 'navy' style adapter? I'd love to have both a 3-lug and thread-on option.

Posted: 11/10/2017 1:54:20 AM EDT

[#28]

Griffin 3-lug 45 mount and Griffin 3-lug barrel adapter. You can use the Griffin 45 suppressor too of course. But I also found out that I can use the Silencerco Omega 45K with the Griffin 3-lug mount, so that's my plan. Another guy used a Rugged Suppressor 45 Obsidian with the Griffin 3-lug mount as well. Apparently these companies are all linked. But yeah the Silencerco 45 3-lug mount won't work with the Griffin 45 3-lug barrel adapter. It will only work on the B&T APC 45 pistol. Maybe one day someone will come up with a thread on adapter that will work... But for now the Griffin mount and adapter will work together.

Posted: 11/10/2017 2:06:00 AM EDT

[#29]

Quote History

Quoted:

That's great news! Will cost be the same as his other 3-lug adapters?

View Quote

I would imagine so. But if cost changes I will let you guys know.

Posted: 11/14/2017 7:14:23 PM EDT

[#30]

Quote History

Quoted:

I would imagine so. But if cost changes I will let you guys know.

View Quote

how would we order? What does the timing look like? this is for the B&T style 3-lug adapter that would work with the sico 45 3-lug assembly right?

Posted: 11/15/2017 12:53:54 AM EDT

[#31]

Quote History

Quoted:
how would we order? What does the timing look like? this is for the B&T style 3-lug adapter that would work with the sico 45 3-lug assembly right?

View Quote View All Quotes

View All Quotes

Quote History

Quoted:

Quoted:

I would imagine so. But if cost changes I will let you guys know.

how would we order? What does the timing look like? this is for the B&T style 3-lug adapter that would work with the sico 45 3-lug assembly right?

When the time arrives, I will post a method of contact and take orders. Yes, it will be a 3 lug Male mount that threads on your barrel and is compatible with the sico 45 3lug female assembly. If any of you are interested I would love a show of hands and what thread pitch you need so I can get an order together.

Posted: 11/15/2017 7:45:41 AM EDT

[#32]

Quote History

Quoted:

If any of you are interested I would love a show of hands and what thread pitch you need so I can get an order together.

View Quote

.578x28 for attachment to a CMMG Guard barrel.

Posted: 11/15/2017 2:13:13 PM EDT

[#33]

+1. I'll take one in .578x28.

Posted: 11/15/2017 3:12:47 PM EDT

[#34]

Quote History

Quoted:
+1. I'll take one in .578x28.

View Quote

I'd like one as well.

Posted: 11/16/2017 12:01:28 AM EDT

[#35]

i'll take one in 16x1LH if possible

Posted: 11/16/2017 12:35:17 AM EDT

[#36]

Another 16x1 LH here.

Posted: 11/16/2017 9:29:49 AM EDT

[#37]

how about one for 5/8x24 (.40 S&W)

Posted: 11/18/2017 1:08:14 AM EDT

[#38]

Quote History

Quoted:
how about one for 5/8x24 (.40 S&W)

View Quote

Interesting thread for .40, most of the time it’s 9/16x24

Posted: 11/23/2017 11:10:56 PM EDT

[#39]

Ill take one 5/8 x 24 for 40 sw as well to fit the silencerco tri lug adaptor

Posted: 11/28/2017 9:52:57 PM EDT

[#40]

any updates on this?

Posted: 11/29/2017 11:57:56 AM EDT

[#41]

I am in for a .578X28 also.

Posted: 11/30/2017 12:42:18 AM EDT

[#42]

Quote History

Quoted:
any updates on this?

View Quote

Still waiting for them to show up. He said he was planing on making some soon. Not to drag this out or lead you guys on, but the guy who makes them is a little flaky, and takes his time. I will check back periodically and keep you guys posted as I find out more. Hopefully I will have them sooner rather than later.

Posted: 12/11/2017 7:15:06 PM EDT

[#43]

any ideasyet on potential production timeline or price?

Posted: 12/12/2017 10:27:49 PM EDT

[#44]

Quote History

Quoted:
any ideasyet on potential production timeline or price?

View Quote

No timelines yet, as I stated before he is slow with this sorta stuff. He gets around to it. But they should retail around $70.

Posted: 12/23/2017 10:53:50 PM EDT

[#45]

Quote History

Quoted:

.578x28 for attachment to a CMMG Guard barrel.

View Quote

I would take one too......

Posted: 12/24/2017 12:12:19 AM EDT

[#46]

Quote History

Quoted:

No timelines yet, as I stated before he is slow with this sorta stuff. He gets around to it. But they should retail around $70.

View Quote

Been meaning to ask, where did your guy pull his dimensions from? Did he reverse engineer a SiCo 3-lug coupler and/or a B&T barrel?

Posted: 1/2/2018 4:21:10 PM EDT

[#47]

New Year bump. Anything new on this?

Posted: 1/5/2018 10:45:12 PM EDT

[#48]

Quote History

Quoted:
New Year bump. Anything new on this?

View Quote

Found an alternative, hope this works.
https://www.griffinarmament.com/45-Caliber-3-Lug-Adapters-p/3lug45.htm

Posted: 1/5/2018 11:24:24 PM EDT

[#49]

I talked to Mark at TROSUSA a few days ago. He will be making the .45 3 lug B&T pattern adapters sometime in the first part of this year. I have a couple of his 3 lug barrels plus several of his adapters and they are a work of art. Stand easy.

Posted: 1/6/2018 1:59:48 AM EDT

[#50]

Quote History

Quoted:

Yes, sadly, I got word today that he is a complete flake, and is not making them as he is “retired”.
Sorry guys.
Found an alternative, hope this works.
https://www.griffinarmament.com/45-Caliber-3-Lug-Adapters-p/3lug45.htm

View Quote

Bummer to hear. But good news about TROS; I've heard they make great stuff.

I was about to get Griffin's 45 coupler and adapter but decided not to after getting one of their 9mm couplers. They've sent me two different ones now, and both have been out of spec. Plus I've read about others having issues with Griffin 45 couplers & adapters not locking up correctly. Sucks too because they look very well made. Will just wait patiently for TROS...

[ARCHIVED THREAD] - Who makes B&T style 3-lug .45 acp barrel for AR? (Page 1 of 2)

AR-15 » Rimfire and Pistol Calibers

AR Sponsor:

Warning

Confirm Action

About AR15.COM

Stay Connected

Newsletter

Contact Us