AR15 complete magazines are pre-assembled and ready for USPSA Multigun, 3-Gun, and PCC shooters who can't afford feeding problems mid-stage. Each magazine arrives with the spring, follower, and base plate installed, so you load it and run. Options include 5.56 NATO and .223 magazines in 20, 30, and 40-round capacities, with steel and polymer bodies and anti-tilt followers, built for AR-15 magwells and fast, dependable reloads. Fast same-day shipping on most orders at Shooters Connection.