New Frontier Pistol Caliber AR-9/45 Side Charging Upper

New Frontier Pistol Caliber AR-9/45 Side Charging UpperFeatures:Multi (Designed for pistol caliber AR rounds)Accepts all Glock pistol caliber magazinesNon Reciprocating Side Charging Billet Upper ReceiverMachined from 6061 billet aluminumMatte black hard-coat anodized per Mil 8625 Type 3 Class 2Compatible with all Glock Mag AR-9 components and most aftermarket partsAdjustable tension slide lock on charging handleRear dust cover trap door that seals shut when mated with lowerManufactured to MILSPEC on state of the art CNC equipment for consistent quality parts and exacting tolerancesSave money by building your own AR pistol caliber rifle from the ground up exactly the way you want it configuredDesigned to match lines with New Frontier Armory C-9 and C-45 Billet Lower and most forged lowersOverall Weight 13.6 OZ**NOTE: Some rail systems that use anti-rotation tabs may need slight modification to fit this upper. It is designed for flush mounting rails and standard hand guards.**NOTE: When building Colt 9mm Carbines, please use our Standard C-4 Side Charging Upper**When using this upper for a 9mm or .40 build you must either use a carbine buffer with our buffer spacer, or a 9mm LONG buffer. Not following these instructions could cause damage to the rear door of the upper that will NOT be covered under warranty**The New Frontier Armory Side Charging AR-9 Stripped Billet Upper with LRBHO is proudly MADE IN THE USA by hard working American men and women.