Build Kits
Moriarti Arms .45 ACP 4.5" Barrel Blowback AR-45 Pistol Kit - Slick Side Upper, M-LOK, Non-LRBHO
Build your AR-45 pistol with this Moriarti Arms 4.5" Barrel Blowback Kit. Designed for Glock-style lowers, this complete upper kit features a slick side upper, blowback gas system, and M-LOK handguard. Ideal for enthusiasts looking for a compact build with reliable performance, this kit comes with everything needed for assembly except the lower receiver. Lower receiver sold separately.
Kit Features:
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Barrel: 4.5" .45 ACP Match Grade AR Barrel
- Material: 4150 Chrome Moly Vanadium Steel
- Finish: Black Nitride
- Chambered: .45 ACP
- Twist Rate: 1:16
- Muzzle Threads: 5/8-24
- Muzzle Device: A2 Flash Hider (designed for .45 ACP)
- Gas System: Blowback
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Upper Receiver:
- Type: AR-15 flat top billet upper, slick side (no forward assist, no dust cover)
- Design: Blowback-dedicated
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Handguard:
- Type: Free-floating 4" Slim M-LOK rail
- Made from aircraft-grade aluminum and black hardcoat anodized for superior durability and performance
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Bolt Carrier Group (BCG):
- Material: US-made 8620 steel with a mag phosphate finish
- Compatibility: Precision milled for use with Glock-style or traditional AR-45 lower receivers
- Cut: M-16 cut for compatibility with transferable full-auto MGs (BATFE rules apply)
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Charging Handle: Mil-Spec Standard AR-15 charging handle
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Lower Parts Kit:
- Complete Standard Mil-Spec AR-15 parts kit with a standard trigger group to complete your lower build
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Pistol Tube Assembly:
- Includes: Foam, 7.5 oz heavy buffer for maximum performance, and carbine spring
Additional Notes:
- This kit comes unassembled and requires a lower receiver, which is sold separately.
- The kit is designed for optimal performance when used with Glock factory magazines.
- Handguard Variations: The handguard design may differ based on stock availability, but it will maintain the same high quality.
- Images may not represent the exact product, as slight variations may exist.
