The AR-45 .45 ACP 10.5" complete upper from Moriarti Armaments offers power, reliability, and precision for your pistol-caliber AR build. Engineered with a billet slick side upper and last round bolt hold open (LRBHO) compatibility, this upper comes fully assembled and includes a bolt carrier group and charging handle for a complete drop-in solution.
Barrel:
10.5" match grade barrel chambered in .45 ACP
4150 CMV steel construction
1:16 twist rate
Threaded 0.578x28
A2 flash hider included
Black nitride finish for durability
Integrated feed ramp (blowback)
Upper Receiver:
Slick side billet design with LRBHO
Made from 7075-T6 aircraft-grade aluminum
Hardcoat anodized to MIL-8625 Type III Class 2
Compatible with AR-15, AR-9, and AR-45 mil-spec components
Gas System:
Blowback operated for pistol caliber functionality
Handguard:
10" lightweight, slim M-LOK free-floating rail
Aircraft-grade aluminum
Hardcoat anodized black finish
Bolt Carrier Group (BCG):
Ramped .45 ACP BCG (Glock/Colt compatible)
8620 steel, phosphate finish
M16-cut
Precision milled for Glock-style AR-45 lowers
Charging Handle:
Standard MIL-SPEC AR-15 CH included
Assembly:
Fully assembled and test-fired
Made in the USA by Moriarti Armaments
To pair this upper with compatible lowers and parts, browse the Moriarti AR-45 Build Kits.
Tags: ar-45, 10.5 .45, acp, 10.5 10.5", upper, –, complete, slick, side, lrbho, moriarti, armaments