Product Description
This upper offers a 1:7 RH military twist rate, Chrome lined. It is also made of 41V50 chrome-moly steel. Barrel length of 14.5" and has a 5.56 NATO chamber. We recommend a 62gr bullet for best accuracy. The MI CRT 12.625" Rifle Length quad rail is ready for all your mounting needs. 14.5"-barrel model will have a pinned and welded BCM Mod 1.