ROCK RIVER ARMS LAR-BT9G 9mm Luger 4.5" Complete Upper

Specifications: Platform: AR-15 9mm GLOCK®Caliber: 9x19Barrel: Chrome Lined 4.5" Chrome Moly, Full Auto Chamber, 1:10 TwistChamber: Chrome linedMuzzle Thread: 1/2-36 UNEFUpper Receiver: 9mm Extruded milled Aluminum A4, machined from 7075-T6 forged aluminumUpper Receiver Features: 9mm Port Door, No Forward AssistHandguard: RRA Lightweight Free Float Rail Handguard, 4.25" M-LOK® CompatibleBolt Carrier Group: RRA Auto with GLOCK® CutInclude Low Pro M-LOK® Compatible HandstopInclude RRA Smith Vortex Flash SuppressorInclude RRA Charging Handle Informations: AT - Category BC.I.P. includedMADE IN THE USA Tested Lowers with LRBHO: ANDERSON AM-9, FAXON Bantam, TICK ARMS X-9, ANGSTADT ARMSCompatible accessories see under this article, accessories