Brownie
New member
Finally got my grendel upper from SD today. Im super happy with it and cant wait for my brass to get here so I can load up some rounds and do some shooting.
side charging upper
6.5 grendel 20" 1:9 twist rock creek barrel
Nickel boron bcg
Topped with SWFA 3X15 in qd pepr
Lower is a RRA with luth skeletonized stock, cmmg 3# trigger.
I had one question. Is there a special bolt release you have to use on these uppers. Mine was not clearing the upper and would not let the bolt slide freely


side charging upper
6.5 grendel 20" 1:9 twist rock creek barrel
Nickel boron bcg
Topped with SWFA 3X15 in qd pepr
Lower is a RRA with luth skeletonized stock, cmmg 3# trigger.
I had one question. Is there a special bolt release you have to use on these uppers. Mine was not clearing the upper and would not let the bolt slide freely

