PCC lower receivers and lower-build components establish the foundation for a competition carbine build. Options cover complete lowers, stripped receivers, lower parts kits, and magwells configured for Glock-pattern or Colt-pattern magazine feeding. Billet and forged aluminum construction with competition-quality machining tolerances ensure consistent fire control fit and long service life under high-round-count match schedules. Fast same-day shipping on most orders at Shooters Connection.