39 bolt carrier group diagram
Bolt Carrier Assembly, Light, New Factory Original. Manufacturer: SIG SAUER (SIGARMS) Model: 516. Product #: 1564190. $161.51 •The bolt carrier group looks similar to that of an AK since the spring is at the top of the carrier. It appears to be fairly small with few parts—something Glock is known for. Glock rifle patent diagram of the bolt carrier group. •The barrel has two gas ports. Glock rifle patent cutaway diagram of the barrel. Bolt Carrier Groups and parts from BCM. Gas Rings, Firing Pins, & more for your AR15, M16, & M4. Bolt carrier group diagram