The Primary Weapons MK1 Mod 2M Upper is designed for those who demand flexibility and precision. At the heart of this upper is an 11.85-inch barrel chambered for 223 Wylde offering a versatile platform for various shooting applications. It incorporates the PWS long stroke piston system renowned for its reliability and performance. The standout feature of this model is the innovative PicLok technology on the free float handguard allowing for seamless attachment of either Picatinny or MLOK accessories. Complemented by a Radian Raptor charging handle this upper is built to enhance your shooting experience ready to be paired with your preferred optics. With a sleek black finish this upper exemplifies both form and function.