PSA SBA3 MOE+ EPT Pistol Lower Build Kit Overview The PSA SBA3 MOE+ EPT Pistol Lower Build Kit is a complete, all-in-one solution for building a high-quality AR-15 pistol from a stripped lower receiver. Featuring the SB Tactical SBA3 adjustable brace, Magpul MOE+ over-molded grip, and PSA Enhanced Polished Trigger, this kit delivers improved ergonomics, a smoother trigger pull, and reliable performance. With a mil-spec 7075-T6 buffer tube assembly and a full lower parts kit included, everything is organized for easy assembly making it an excellent choice for builders who want comfort, control, and proven PSA value in one package.