Moriarti AR-45 .45 ACP 16" Slick Side LRBHO M-LOK Upper Assembly / BCG and Charging Handle

Uppers

AR-45 .45 ACP 16" Slick Side LRBHO M-LOK Upper Assembly / BCG and Charging Handle – Moriarti Armaments

This AR-45 16" upper assembly by Moriarti Armaments is built on a slick side billet upper receiver and features the Last Round Bolt Hold Open (LRBHO) function for enhanced operation with Glock-style lower receivers. Chambered in .45 ACP and built with premium materials, this upper delivers reliable performance, durability, and compatibility with AR-45 platforms.

Current ETA: 4–8 weeks

Features

Barrel:

• 16 inch match-grade barrel chambered in .45 ACP

• 4150 CrMoV steel, black nitride finish

• 1:16 twist rate

• Threaded 5/8x24 with A2 flash hider

• Integrated feed ramp

Upper Receiver:

• Slick side billet upper made from certified 7075-T6 aluminum

• Type III Class 2 hardcoat anodized

• Includes LRBHO feature for Glock magazine compatibility

• Compatible with all AR-15, AR-9, and AR-45 mil-spec components

Gas System:

• Blowback operation for reliable pistol-caliber cycling

Handguard:

• Rifle-length M-LOK free-float rail

• Slim and lightweight profile

• Aircraft-grade aluminum, hardcoat anodized

Bolt Carrier Group:

• AR-45 ramped BCG

• 8620 steel, phosphate finish

• Precision milled for Glock-style and Colt-style AR-45 lowers

Charging Handle:

• Standard mil-spec AR-15 charging handle included

Upper comes fully assembled and test-fired. Manufactured in the USA by Moriarti Armaments. Images may not be the exact representation of the item.