The SMR MK8 also characteristics Geissele’s proprietary two.25″ long barrel nut. This raises the surface area Make contact with in which the rail interfaces With all the receiver and generates a platform which might be trustworthy to get straight and legitimate the complete duration in the free float rail. Markings https://kac-ras-rail75295.look4blog.com/65718916/knights-armament-m4-quad-rail-can-be-fun-for-anyone