The RCR-24 is our competition model that features our 16" Magna-Lite Barrel (weighs 7.2oz), 12" aluminum M-Lok Handguard, Ambi Forward, and Rear Charging Handle System. The RCR-24 and is a premium .22 caliber semi-automatic rimfire rifle with aluminum upper and lower receivers and all the features of a true M4. The M4-22 RCR-24 is largely mil-spec compatible and will accept most AR15 stocks, handguards, and sights. Features and Specifications * 16" Magna-Lite Barrel - Spiral Fluted Magnesium outer barrel with steel inner * Threaded barrel, 1/2x28 with thread protector. * Aluminum Ambi Forward Charging Handle System * Aluminum Rear Ambi Charging Handle * 12" Aluminum Free Float Handguard * Gen2 Grip * Semi-Automatic * Aluminum Upper and Lower Receiver * 25 RND Magazine * Functional Forward Assist * Bolt Catch * Adjustable Flip-Up Sights * Shell Deflector * 4 1/2 Pound Trigger Pull * Ejection Port Cover * Adjustable Stock * 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 in Trigger Assemblies * Standard "bicycle lock" Storage Safety * Compatible With Most Standard AR15 Components and Accessories * Owner's Manual