The TacFire PK45ACPLPK10 Pistol Kit in 45 ACP Steel delivers a complete, USA-made assembly package for builders seeking a reliable foundation with ready-to-build compatibility, featuring a 10" .45ACP barrel and a matching bolt carrier group, a slick side upper receiver, and a slim free float MLOK hand guard that extends control and customization options. This kit includes a full lower parts kit, standard receiver end plate, Mil-Spec components such as the castle nut and steel, as well as a Mil-Spec pistol buffer tube with foam-covered aluminum construction, a heavy buffer and corresponding buffer tube spring to promote smooth cycling, plus a Mil-Spec charging handle, dust cover, and forward assist to ensure consistent operation. The included 5/8x24 linear compensator provides effective muzzle management while maintaining a clean, straightforward assembly flow for builders and hobbyists alike. Made from durable steel, these USA-made parts are designed to integrate into a polished, dependable platform that you can tailor to your preferred configuration and use case, whether range practice, target shooting, or field readiness. Overall, this TacFire kit combines essential components with proven fit and finish to empower customization and performance in a single, cohesive package.