The M4-22 PRO is a premium .22 caliber semi-automatic tactical rimfire rifle with aluminum upper and lower receivers and all the features of a true M4. The M4-22 PRO 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 training applications or backyard plinking.Features and Specifications*Composite Free Float Handguard*16" 4150 Solid Steel Barrel with Parkerized Finish*Nickel Plated Bolt*Gen2 Grip*Semi-Automatic*Aluminum Upper and Lower Receiver*New 25 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