NBS 8" 9mm M-LOK Complete Upper with LRBHO

The NBS 8" 9mm M-LOK Complete Upper with LRBHO is an excellent choice for your next Pistol or NFA compliant SBR build. We started with the excellent New Frontier Billet PCC Upper Receiver which features a patented Last Round Bolt Hold-Open (LRBHO) mechanism. At the heart of the upper is an 8" QPQ Nitride 9mm barrel w/ a tapered profile and a generous feed cone to ensure reliable cycling. We've installed a flash can which results in reduced concussion and perceived noise levels but that can easily be swapped for a muzzle device of your choosing or suppressor. The upper also features a QPQ Nitride Toolcraft Gen2 BCG with a durable M16 style extractor and a mil-spec charging handle. The popular NBS M-LOK Handguard features a full length top rail and M-LOK mounting slots on all sides. Note: LRBHO function will only work with Glock style AR-9 Lowers. This upper is backed by the NBS Limited Lifetime Warranty in addition to the Dirty Bird Zero Risk Guarantee. Purchase with confidence, install it, run it and if you aren't happy for any reason, return it within 30 days for a full refund.