Doesn’t cause any issues, cosmetic. I have similar on other rifle a few years.
Andrew - Lancaster, CA
NRA Life Member, CRPA member, Calguns.net contributor, CGF / SAF / FPC / CCRKBA / GOA / NAGR / NRA-ILA contributor, USCCA member - Support your defenders!
Does it have a false shoulder?
RLTW
“What’s New” button, but without GD: https://www.m4carbine.net/search.php...new&exclude=60 , courtesy of ST911.
Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.
Are you running a can? If so, check alignment. If not, no worries.
Many barrels do not have a relief cut behind the threads, and thus have a slightly larger diameter next to the shoulder. This requires a shim/spacer that is chamfered or slightly larger than what will fit over the threads. Several manufacturers include such a spacer (Surefire, for example). Without the oversized or chamfered spacer, shims will deform as they are pushed over the uncut area behind the threads.
reference: https://www.surefire.com/wp-content/...tion_Rev-C.pdf
Last edited by MQ105; 07-15-20 at 11:44.
Definitely check suppressor alignment with a rod.
Adding a beveled spacer or using a single thick shim washer such as the Precision Armament may work better in this case.
Black River Tactical
BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
BRT Bolt Carrier Groups M4A1, M16 CHROME
BRT Covert Comps 5.56, 6X, 7.62
The SureFire shim kit has a spacer designed to deal with this issue.
MQ105 already said it...
Last edited by LMT/556; 07-15-20 at 14:07.
Bookmarks