Moriarti AR-9 9MM 4.5" LRBHO Slick Side Complete Upper Assembly with BCG and Charging Handle

Uppers

Moriarti AR-9 9MM 4.5" LRBHO Slick Side Complete Upper Assembly with BCG & Charging Handle - Black

The Moriarti AR-9 9MM 4.5" LRBHO Slick Side Complete Upper Assembly offers a high-performance build for your AR-9 platform, providing the Last Round Bolt Hold Open (LRBHO) feature for added convenience and reliability. Built on a precision-machined billet upper receiver and made from durable 7075-T6 aircraft-grade aluminum, this upper is engineered for durability and long-lasting performance.

• Barrel: The 4.5" 9mm match-grade barrel is crafted from 4150 chromoly steel and treated with a black nitride finish for enhanced corrosion resistance and durability. It features a 1:10 twist rate and 1/2x36 muzzle brake threads topped off with an A2 flash hider for effective muzzle control and reduced flash signature.

• LRBHO Slick Side Upper Receiver: This sleek and functional receiver is machined from 7075-T6 billet aluminum, ensuring superior strength and weight reduction. The black hardcoat anodized finish is MIL 8625 Type 3 Class 2 compliant, providing an exceptional level of durability and wear resistance. It is compatible with AR-15, AR-9, and AR-45 mil-spec components, making it ideal for customization.

• Gas System: The blowback system ensures reliable cycling for your 9mm ammunition, providing consistent performance across various loads.

• Handguard: A lightweight, free-floating 4" slim M-LOK rail is included, offering flexibility for mounting accessories while maintaining a low-profile design.

• Bolt Carrier Group (BCG): This AR-9 ramped BCG is compatible with Glock and Colt style lower receivers. Crafted from US-made 8620 steel with a nitride finish, it’s precision-milled to handle the rigors of blowback operation and ready for full-auto applications (with proper licensing).

This upper assembly comes fully assembled and tested, ensuring that your build is ready for installation right out of the box. Compatible with Glock compatible lower receivers.

NOTE: Due to production schedules, please expect a lead time of at least 8 weeks before shipping. Made in the USA by Moriarti Armaments.