I believe they shorten the CMMG BCG overall then add a small block to the rear portion which prevents it from going back into the buffer tube. The AR bcg works fine because in an AR it retracts probably 3/8 to a 1/2" behind the ejection port so there is a larger tolerance. In the MS it only clears the ejection port by about 3/16." Maybe someone else can explain more clearly but the ATRS mod on the CMMG kit runs perfect .
No this does make sense thank you ! I am assuming the root of the issue is caused by the buffer putting too much forward pressure on the .22lr BCG when its design is intended not to have this forward pressure. What does ATRS charge for the modification ?
150$ from ATRS
Hi, has anyone had a problem with the front pivot pin? When I put the lower and upper together I can push the pin with the strength of my finger but I need a little punch and a hammer to pull the pin out for disassembly. The upper and lower are very tight it is normal ? thanks
Anyone happen to know if the maxim Defense CQB stock will work?