NBS AR-9 Billet Upper Receiver for 9mm / .45

The NBS AR-9 Billet Upper Receiver is a quality, American made billet upper designed to be used on Pistol Caliber Carbine (PCC) builds. Most often PCC builds are either 9mm or .45 ACP. This billet upper features a unique design that sets it apart from traditional forged upper receivers. Manufactured to exacting standards on five axis CNC machines from a solid block of aircraft grade aluminum, this stripped upper not only looks good... it is built to last. No Feedramps Compatible with mil-spec forged lower receivers and most billet lower receivers .250 takedown / pivot pin holes No forward assist Weight: 7.1ozMade in the USABacked by the NBS Limited Lifetime Warranty