Moriarti AR-45 .45 ACP 8" Side Charging Upper with LRBHO and BCG

Uppers

Moriarti AR-45 .45 ACP 8" Side Charging Upper / LRBHO / BCG Included

Take your AR pistol build to the next level with the Moriarti AR-45 .45 ACP 8" Side Charging Upper Assembly, built with Last Round Bolt Hold Open (LRBHO) and included bolt carrier group (BCG). Precision machined and designed for Glock-style or traditional AR-45 lowers, this upper is perfect for those demanding a rugged and efficient .45 ACP blowback system.

Machined from 7075-T6 billet aluminum, this upper features a durable side charging design for better ergonomics and enhanced shooting control. With a match-grade 8" 4150 CMV barrel and M-LOK handguard, it’s an optimal choice for home defense, range, or tactical use.

Please note: Uppers are manufactured on a monthly cycle. Expect approximately an 4-week lead time.

Key Features:

Barrel:

• Length: 8"

• Caliber: .45 ACP

• Material: 4150 CrMoV

• Twist Rate: 1:16

• Muzzle Threads: 5/8x24 (A2 flash hider installed)

• Finish: Black Nitride

• Integrated feed ramp – blowback system

Upper Receiver:

• Side Charging Billet Upper – Non-reciprocating

• 7075-T6 Aluminum

• Type III Class 2 Hardcoat Anodized

• Includes Last Round Bolt Hold Open (LRBHO)

• Compatible with Glock-style and AR-45 billet lowers

Handguard:

• 7" Free-Floating Slim M-LOK Rail

• Aircraft-grade aluminum, hardcoat anodized

Bolt Carrier Group (Included):

• .45 ACP ramped BCG

• 8620 steel, mag phosphate finish

• M16 cut

• Glock & Colt mag compatible

Charging Handle:

• Side charging handle included

Recommendations:

• For optimal performance, pair with a 8-10 oz heavy buffer system.

• Compatible with Moriarti Glock billet lower receivers for LRBHO function.

• Pair with the Moriarti AR-45 Billet Lower Receiver with LRBHO