Bear Creek Arsenal BC-15 5.56 NATO 10.5" 30rd M-LOK Pistol

Same receiver set as the BC-15 rifle, cut down to a 10.5" chrome moly barrel with a parkerized finish. Losing five and a half inches of barrel takes the overall length down to where the gun fits a pack or a truck console, and 5.56 out of a 10.5" tube still carries far more energy across a room than any pistol caliber alternative. The carbine length gas system is the correct pairing for this barrel, keeping port pressure in check so the bolt is not driven rearward harder than it needs to be.

An M-LOK handguard free floats the barrel and leaves plenty of room for a light and a hand stop, which counts for more on a short gun where the support hand ends up near the muzzle. It comes with an adjustable buffer tube and no brace fitted, leaving that choice to you. One 30rd magazine is included. Controls, pins, and springs are AR-15 standard from front to back, so aftermarket triggers, grips, and charging handles fit without modification. Short, light, and chambered in a real rifle cartridge is a hard combination to argue with for home defense or a vehicle gun.