The first 500 round Federal blue box outing went better than expected. There were about 6-8 light rim strikes (out of 500 rounds of cheap ammo, that's not bad) which involved dropping the mag., charging and replacing the mag. then on with the shooting. It's more accurate than expected, especially w/ the cheaper ammo. The last 90 rounds were rapid fire w/ only 1 light rim strike. To sum it up the rifle ran great and was alot of fun.
I have manufactured thread adapters for these, contact Pocono Mountain Sporting Goods to purchase them as he is my distributor.
Pocono Mountain Sporting Goods
570-226-7526
pmsg@verizon.net
They replace the stock flash hider and provide 1/2 X 28 threads so you can attach any standard AR-15 muzzle device and/or suppressor. They have 5/8 wrench flats to allow easy mounting/dismouting, the adapter adds only 0.250 to the OAL. They are CNC machined in one chucking on a Swiss-type machine to provideconcentricity that greatly exceeds Gemtech's requirements.