The M4-22 MAGNUM ELITE is a premium .22 WMR caliber semi-automatic tactical rimfire rifle with aluminum upper and lower receivers and all the features of a true M4. The M4-22 is largely mil-spec compatible and will accept most AR15 stocks, handguards, and sights. The M4-22 has the look, feel, and controls of a true M4 and is a perfect platform for competition and training applications or backyard plinking. Features and Specifications Caliber - .22WMR 12" Aluminum Free Float M-LOK Handguard 16" 4150 Solid Steel Barrel Nickel Plated Bolt Gen2 Grip Semi-Automatic Aluminum Upper and Lower Receiver 15 RND Magazine Functional Forward Assist Bolt Catch Charging Handle Adjustable Flip-Up Sights Shell Deflector 4 1/2 Pound Trigger Pull Ejection Port Cover Adjustable Stock 1/2 x 28 Threaded A2 Birdcage Popular AR Platform Easy Push Pin Disassembly Full Length Top Picatinny Rail 2-Position, Receiver Mounted Safety Lever Ambidextrous Sling Adapter Plate Mil-Spec FCG Allows For Drop-in Trigger Assemblies Standard "bicycle lock" Storage Safety Compatible With Most Standard AR15 Components and Accessories Owner's Manual