What's in the Box Tippman M4-22 Pro 22LR Rimfire Rifle with 9 Inch Composite Free Float Handguard (1) 25-Round Magazine Cable Lock Owner's Manual 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. Firearm Features 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 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 (With the exception of the Safety lever. It is proprietary.) Allows For Drop in Trigger Assemblies Standard bicycle lock Storage Safety Compatible With Most Standard AR15 Components and Accessories Firearm Specifications Manufacturer: Tippmann Arms Model: M4-22 Pro Caliber: 22 LR Barrel: 16"; 4150 Solid Steel with Parkerized Finish Overall Length: 31.25" - 34.5" Stock: Adjustable Finish: Matte Black Twist Rate: 1:16" Magazine Capacity: 25 Rounds Weight: 5.22 lbs.