LanTac Milspec BCG for AR 15

Overview

Milspec BCG Features The Bolt is machined from Carpenter 158 or 9310 shot peened and hard turned as per the military spec. Each BCG is further fitted with a Lantac CP-R360 domed head cam pin which are precision machined from 17-4PH stainless steel hand-polished and hardened to H900 condition this further reduces friction and wear within the upper receiver. The M-SPEC line of products are ideal for budget builds where quality and reliability are still paramount. Milspec BCG Specifications 8620 Carrier Heat Treated Hard Turned & Ground. MPI Carpenter 158 or 9310 Bolt Shot Peened Hard Turned / Ground. QPQ Nitride Finish. CP-R360 Domed Cam Pin Shot Peening is conducted with S110 shot Established by Almen Gage A-2 strip .006 -.008