WTS GBLS DAS GDR15 (COLT M4A1 Version) Package good condition, BCM logo on upper receiver and BCG. Recently maintenance and inspected by GBLS USA. Asking $1350 shipped Upgrades: 2022 version mosfet, Legit BCM MCMR rail and charging handle, BCM Air Stock, G&P steel outer barrel, and KAC flash hider. Includes GBLS 30/60rds 5 Mags pack, Recoil Buffer Type B, Spare Air seal nozzle, M100 and M90 spring, original Rail and Barrel. Add the EXPS 2-0 for $350 more info and shooting video available