COLT EPR-II PATROL GEN2 5.56 NATO/223 REM SEM-AUTO RIFLE M4 Cage Code Marked Upper Receiver Forging with LE Marked Lower Receiver New Colt M-LOK Handguard Continuous Top Rail, 7-Orientations of M-LOK Steel Reinforced QD Sling Attachment Points on Handguard Magpul MBUS 3 Folding Sights Magpul Enhanced Trigger Guard Ambidextrous Safety Selector Magpul SL Stock Barrel Length 16.1" Capacity 30+1 Caliber 5.56MM Weight 6.7 LBS A2 Grip Standard Mag Catch MIL-SPEC Charging Handle Mfg: Colt