AR-10MM 8.5" Slick Side Pistol Upper with Flash Can, CH & BCG – Moriarti Arms

Uppers

AR-10MM 8.5" Pistol Upper Assembly – Slick Side, Flash Can, M-LOK Rail, CH & BCG Included – Moriarti Arms

The 8.5" 10MM AR Pistol Upper Assembly by Moriarti Arms is engineered for shooters seeking a compact, reliable blowback system for Glock- or Colt-mag compatible lower receivers. Designed around a slick side billet upper, this setup eliminates the forward assist for a cleaner profile and reduced snag points. Ideal for custom builds and minimalist AR pistol setups.

Upper Features:

• Barrel: 8.5" 10MM match grade barrel, made from 4150 CMV steel with black nitride finish, 1:16 twist rate. Threaded 5/8x24 and capped with a slim flash can.

• Gas System: Blowback operation, optimized for pistol caliber builds.

• Receiver: Non-reciprocating slick side billet upper receiver, machined from 7075-T6 aluminum, hardcoat anodized per MIL-8625 Type 3 Class 2.

• Handguard: 10" free-floating M-LOK handguard with slim, lightweight design. Aircraft-grade aluminum construction, black anodized finish.

• Bolt Carrier Group (BCG): Included. Ramped 10MM / .40 S&W BCG, made from 8620 steel with mag phosphate finish. Glock & Colt lower compatible, full-auto rated (M-16 cut).

• Charging Handle: AR-15 charging handle included.

Compatibility:

This upper is compatible with 45-ACP Glock-magazine lower receivers.

Made in the USA. Ships assembled and ready to install.

Note: Images may not reflect exact configuration. Slight variations in rail design may occur based on stock availability.