Product DescriptionThe Primary Weapons MK1 MOD 2-M complete upper is built for shooters who want a premium AR-15 upper with the proven performance of the PWS long stroke piston system. Chambered in .223 Wylde, this optics-ready upper combines versatile ammunition compatibility with a compact 11.85-inch black barrel and a durable 7075-T6 aluminum black receiver. The free float 11-inch PWS PicLok handguard adds flexibility by allowing users to mount either Picatinny or M-LOK compatible accessories at the front of the firearm. This upper also includes a Radian Raptor charging handle, making it a strong choice for tactical builds, defensive setups, and custom AR-15 platforms.Product Highlights PWS long stroke piston system delivers reliable operation and is a signature feature of the MK1 MOD 2-M line. .223 Wylde chamber supports versatile performance with popular .223 and 5.56 compatible AR-style applications. 11-inch PicLok free float handguard accepts both Picatinny and M-LOK style accessory mounting options. Constructed with a black 7075-T6 aluminum receiver for strength, durability, and lightweight performance. Features an 11.85-inch barrel, Radian Raptor charging handle, and optics-ready configuration for fast customization. Specs Product Type: Complete Upper Receiver Platform: AR-15 Model: MK1 MOD 2-M Caliber/Chambering: .223 Wylde Barrel Length: 11.85 in Barrel Finish: Black Receiver Material: 7075-T6 Aluminum Receiver Finish: Black Handguard Length: 11 in Handguard Type: PWS PicLok Free Float Accessory Interface: Picatinny or M-LOK Charging Handle: Radian Raptor Optics Ready: Yes UPC: 811154033208 MPN: MK1M2U22311 Brand: Primary Weapons Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.