BCM4 with 14.5-inch chrome-lined mid-length barrel and MCMR handguard, pinned-and-welded BCM VG6 Gamma muzzle device reaching 16-inch overall. This configuration is the most compact BCM rifle configuration that does not require NFA registration, matching the profile of military M4A1 without select-fire. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2018, USA Weight: 100 oz Overall length: 32.25" Status: Active Intended use: Tactical, Law Enforcement