BCM BCM4 5.56 NATO AR-15 with Geissele MK16 13.5 DDC Rail, Geissele BCG, and Pinned/Welded 3-Prong Flash Hider
This BCM BCM4 is a custom-configured AR-15 pairing a BCM4 lower with a Geissele upper assembly. It features the Geissele Super Modular Rail MK16 13.5-inch M-LOK handguard in DDC with NSN 1005-01-672-4797, a Geissele-marked bolt carrier, and a permanently attached three-prong flash hider. The flat-top, T-marked upper and the extended charging handle latch in bronze/tan round out a build that emphasizes quality components and clean execution.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This rifle presents in fantastic shape and appears to have been rarely used, if ever.
What’s Included
- BCM BCM4 5.56 NATO semi-automatic rifle as described
- 1x 30-round Magpul PMAG polymer magazine (marked 300 BLK)
The BCM4 lower is factory-marked and mated to a Geissele upper assembly, delivering a cohesive setup built on proven AR-15 architecture. The MK16 13.5-inch M-LOK handguard in DDC is engraved with NSN 1005-01-672-4797 and provides ample mounting real estate while keeping the profile streamlined.
A Geissele-marked bolt carrier and an extended charging handle latch with a bronze/tan finish support smooth operation and confident manipulation. The flat-top upper includes a forward assist and ejection-port cover, with a continuous, T-marked Picatinny rail that runs across the receiver and handguard.
The barrel is 16.5 inches in length, threaded, and capped with a three-prong flash hider that is permanently attached. The barrel device is pinned and welded, and the configuration retains a clean, duty-style appearance.
The rifle uses a direct-impingement, semi-automatic system with a manual safety. It includes a 6-position collapsible stock with a 13.0-inch length of pull and a textured black polymer pistol grip marked with a star-in-circle emblem. The receivers are aluminum/alloy with a hardcoat anodized finish, and overall capacity is 30+1.