Barrel cut, threaded to 14mm, JMAC Keymo Brake, pinned and welded. JMAC 14.25" rail cut and contoured to perfect length to match shortened barrel and enable KEYMO suppressor attachment. Concentricity at 100%, perfect threading. Match trigger, JMAC 90 degree gas block installed and Saiga gas tube fitted perfectly with zero tolerance fit. Gunsmith performed hours of work to bring this gun to an exacting standard. It is one of a kind that could only come from Boutique builds. I Can text photos.