AR-40 8" Side Charging LRBHO Pistol Cal Complete Upper Assembly with BCG - .40 S&W

Uppers

AR-40 8" Side Charging LRBHO Pistol Cal Complete Upper Assembly with BCG - .40 S&W

The AR-40 8" Side Charging LRBHO Pistol Cal Complete Upper Assembly is designed for maximum performance and compatibility with your MA-9 Glock-style lower receiver. Built on a non-reciprocating side charging billet upper receiver with Last Round Bolt Hold Open (LRBHO), this upper assembly delivers smooth and reliable operation for your .40 S&W AR build.

Key Features:

• Barrel: This upper features an 8" .40 S&W match-grade AR barrel crafted from 4150 chromoly steel with a sleek black nitride finish for enhanced durability. The barrel boasts a 1:16 twist rate and 5/8-24 muzzle brake threads, ending with a classic A2 flash hider to reduce flash signature.

• Upper Receiver: The side charging billet upper receiver is machined from 6061 billet aluminum, ensuring a robust and lightweight design. The matte black hard-coat anodized finish meets Mil 8625 Type 3 Class 2 standards, offering superior corrosion resistance. This receiver is compatible with all Glock mag AR-9/40/45 components and most aftermarket parts.

• Gas System: Designed for a blowback gas system, this upper is perfect for pistol caliber cartridges, offering reliable cycling with no need for feed ramps.

• Handguards: The 7" slim Mlok rail is free-floating, providing a lightweight and customizable platform. Made from aircraft-grade aluminum, it is hard-coat anodized for long-lasting durability and a sleek finish.

• BCG: The AR-40 .40 S&W 10mm ramped BCG is Glock & Colt compatible. Precision machined from US-made 8620 steel and finished with mag phosphate, it is optimized for use with Glock-style MA-9 lower receivers and traditional AR-15 lowers with a mag adapter. The M-16 cut allows for use in transferable full-auto MGs, dealer post sample MGs, or other legal machine guns (subject to BATFE rules).

• Charging Handle: Includes a standard AR-15 charging handle, offering smooth and efficient operation.

This AR-40 8" Side Charging LRBHO Upper is perfect for those seeking a compact, powerful, and reliable .40 S&W upper to complete their AR build. Whether you are building a pistol or rifle, this assembly is designed to provide the perfect fit and function for your Glock-style lower receiver.

Please Note: The upper assembly comes fully assembled and tested. Lower receiver, sights, and magazines are not included. Images may not represent the exact product.