AR Sponsor
Posted: 1/10/2017 11:41:30 AM EDT
|
I currently have a Griffin Armament Recce-5 on my BCM 10.3" which was cut down by ADCO. I am wanting to get an additional suppressor mount to use on my Colt 6920 but before I spend the money on a mount and risk a possible baffle strike, I want to know if the threads on Colts are concentric to the bore. Common sense would tell me yes given their track record but I want to make sure. I would hate to have a baffle strike on my suppressor especially considering the cost and the fact that it's my only one at the moment.
Thanks in advance. |
|
Always mount the can and sight down the bore with the BCG removed from the receiver side. You will be able to tell if it is mounted correctly. If it looks wrong, it is wrong.
Threads can be concentric, but may not have a proper relief cut at the shoulder. This isn't an issue if the can or mount has a proper chamfer. I have seen both done wrong. ALWAYS CHECK!!! |
|
Quoted:
That would probably depend on what definition you use. Are they within the mil spec? Probably. Are they within a suppressor company's spec? Maybe. Are they perfectly concentric? Probably not. My $0.02  Ok thanks. I do have this question though. If I send the barrel in to your shop, are you able to cut concentric threads without shortening the overall length of the barrel. I'm trying to stay out of SBR territory on this one. |
|
Quoted:
That would probably depend on what definition you use. Are they within the mil spec? Probably. Are they within a suppressor company's spec? Maybe. Are they perfectly concentric? Probably not. My $0.02 The print specifies the pitch diameter be concentric to the bore centerline to within .004" . . . However, the print also specifies: "A self aligning plug inserted 3.000" into the bore at the muzzle may have an angular deviation from the theoretical axis [that the threads are concentric to] of 3 angular minutes." So, just asking the question, "are the threads concentric?" is not enough. Have it checked. |
AR Sponsor