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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