The AR-45 .45 ACP 7.5" Slick Side Upper from Moriarti Armaments delivers compact firepower in a minimalist platform, ideal for pistol-caliber builds. Built on a non-LRBHO slick side upper receiver, this complete upper assembly includes a 7.5" match-grade barrel, free-float M-LOK rail, ramped BCG, and charging handle—all factory assembled and test fired.
Barrel:
7.5" match grade barrel chambered in .45 ACP
4150 CrMoV steel, black nitride finish
1:16 twist rate
Threaded .578x28 with A2 flash hider
Integrated feed ramp
Blowback operation
Upper Receiver:
Slick side billet upper made from 7075-T6 forged aluminum
Hardcoat anodized per MIL-8625 Type III Class 2
Compatible with AR-15, AR-9, and AR-45 mil-spec components
Gas System:
Blowback system for reliable pistol-caliber cycling
Handguard:
7" lightweight free-floating slim Moriarti M-LOK rail
Aircraft-grade aluminum, black hardcoat anodized
Bolt Carrier Group:
Ramped BCG
US-made 8620 steel, phosphate finish
Precision machined for Glock and Colt style AR-45 lowers
M16 cut
Charging Handle:
Standard AR-15 charging handle included
Images shown are for reference only and may not represent exact configuration. For optimal performance, pair this upper with a heavy buffer (minimum 8 oz) when building an AR-45 pistol.
Looking for a shorter barrel? View the AR-45 .45 ACP 4" Slick Side Cone Upper – Moriarti Armaments.
Tags: ar-45, .45, acp, 7.5 7.5 7.5", slick, side, upper, bcg, and, charging, handle, non-lrbho, –, moriarti, armaments