Standard Patrol Models
Monolithic Rail Platforms
Modular Weapon Systems
Grenade Launchers
6.5 Cr
5.56x45
.224 Val
.300 Blk
7.62x51
40mm
PartsLower Receiver Parts5.56 Extension Tube
NSN: 1010-01-611-4106
Milspec 5.56 receiver extension
