Phase 5 Weapon Systems BCGM16 Bolt Carrier Group Black Phosphate Stainless Steel M4,M16 Air Guns and Accessories the Ultra Shot M-Spec features

the Ultra Shot M-Spec features a magnesium alloy body that is both lightweight and incredibly durable

Fits Smith & Wesson M&P Series (including Shield

123 grain polymer coated steel full metal jacket

The Trauma Pak I gives you the power to stop bleeding with the basic trauma tools and medical supplies you need to take action until medical professionals arrive

simple and easy

Phase 5 Weapon Systems BCGM16 Bolt Carrier Group Black Phosphate Stainless Steel M4,M16 Air Guns and Accessories the Ultra Shot M-Spec featuresPhase 5's Mil spec M 16 M 4 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes: cam pin, firing pin, gas key, and bolt.