Product Description The TacFire SS-RK45ACP-LPK Complete AR Build Kit is an all-inclusive solution for assembling a .45 ACP AR-platform rifle. Offered as a Sports South Exclusive, this kit delivers everything you need to complete your build -- simply add a stripped lower receiver and a few basic tools. The centerpiece is a 16" .45 ACP USA-made barrel with a black nitride finish, providing outstanding hardness, corrosion resistance, and long-term durability. A 15" slim M-LOK free float handguard keeps the profile lightweight while offering versatile accessory mounting options along its entire length. The stripped billet upper receiver features M4 feed ramps for reliable feeding, and the included .45 ACP Bolt Carrier Group ensures consistent, smooth cycling. From the Mil-Spec charging handle to the complete USA-made lower parts kit, every component in this build kit reflects TacFire&';s commitment to quality and value. Product Highlights 16" .45 ACP Black Nitride Barrel: USA-made barrel with a black nitride finish for superior hardness, wear resistance, and corrosion protection. 15" Slim M-LOK Free Float Handguard: Lightweight free float design with M-LOK slots throughout for flexible accessory and optic mounting. Mil-Spec Billet Upper Receiver with M4 Feed Ramps: Stripped AR-15 5.56/.223/.300 AAC billet upper ensures broad compatibility and reliable feeding with the included .45 ACP BCG. Complete USA-Made Lower Parts Kit: Includes buffer tube, castle nut, end plate, buffer, buffer spring, and A2 style black pistol grip -- everything needed to complete the lower build. All-Inclusive Build Kit: Just add a stripped lower receiver to have all the parts required for a complete, custom-built .45 ACP AR-platform rifle. Specs Brand: TacFire MPN: SSRK45ACPLPK UPC: 745559515222 Caliber: .45 ACP Barrel Length: 16" Finish: Black Nitride Handguard: 15" Slim M-LOK Free Float Upper Receiver: AR-15 5.56/.223/.300 AAC Stripped Billet with M4 Feed Ramps Bolt Carrier Group: .45 ACP BCG Flash Hider: Birdcage with Crush Washer Charging Handle: AR-15/.556 Mil-Spec Aluminum with Steel Latch Buffer Tube: Aluminum, Mil-Spec Buffer: AR-15 5.5 oz with Tube Spring Pistol Grip: A2 Style Black Lower Parts Kit: AR-15 USA Made Additional Components: Dust Cover, Forward Assist, Receiver End Plate, Castle Nut Action: Semi-Auto Material: Aluminum Weight: 6.05 lbs Country of Manufacture: USA Exclusive: Sports South Exclusive 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. ]]>