Color
AR-15 .400 Legend 10.5" Pistol Kit | Slick Side | 10" Quad Rail
Configure a compact .400 Legend AR-15 with this Moriarti 10.5" .400 Legend pistol kit. The package combines a 10.5" 1:16 twist barrel, forged slick-side upper receiver, 10" free-float quad rail, M16-style bolt carrier group, Mil-Spec lower parts kit, tactical charging handle, and complete pistol buffer system.
This kit includes the components listed below for completing a compatible AR-15 configuration. Lower receiver is not included.
Color options are available at the top of the page. Applicable components are Cerakoted in the selected color.
10.5" .400 Legend Barrel
The kit is built around a 10.5" .400 Legend government-profile barrel manufactured from 4150 CrMoV steel. It features a 1:16 twist rate, pistol-length gas system, black nitride finish, and 5/8x24 muzzle threads.
Barrel Specifications:
- Caliber / Chamber: .400 Legend
- Barrel Length: 10.5"
- Profile: Government
- Material: 4150 CrMoV
- Finish: Black Nitride
- Twist Rate: 1:16
- Gas System: Pistol Length
- Gas Block Journal: .750"
- Muzzle Thread: 5/8x24
- Muzzle Device: A2 Flash Hider
10" Free-Float Quad Rail
The barrel is paired with a 10" aluminum free-float quad rail, providing four-sided accessory-mounting space while maintaining the compact profile of the 10.5" configuration.
The handguard is Cerakoted in your selected color where applicable.
Forged Slick-Side Upper Receiver
The upper features a precision-machined 7075-T6 forged M4 flat-top receiver with a streamlined slick-side configuration.
- 7075-T6 forged construction
- M4 flat-top design
- Slick-side configuration
- No forward assist
- Ejection port cover
- Selected components Cerakoted according to chosen color
M16-Style Bolt Carrier Group
A complete M16-cut bolt carrier group is included for the listed .400 Legend configuration.
- M16-cut carrier
- Nitride finish
- Chrome-lined carrier
- MPI tested
- Complete bolt assembly
- Cam pin
- Firing pin
- Firing pin retaining pin
AR-15 Tactical Charging Handle
An AR-15 tactical charging handle is included and Cerakoted to coordinate with the selected color configuration where applicable.
Mil-Spec AR-15 Lower Parts Kit
Includes a Mil-Spec AR-15 lower parts kit containing the listed components for use with a compatible stripped AR-15 lower receiver.
Lower receiver is not included.
Complete Pistol Buffer System
Includes a complete AR-15 pistol buffer tube assembly featuring:
- Pistol buffer tube
- Foam covering
- 3 oz buffer
- AR-15 buffer spring
- Required buffer-system components
Kit Highlights
.400 Legend | 10.5" Barrel | 1:16 Twist | Pistol-Length Gas | .750" Gas Block Journal | 5/8x24 Threads | Black Nitride | Slick-Side Forged Upper | 10" Free-Float Quad Rail | M16-Style BCG | Tactical Charging Handle | Mil-Spec Lower Parts Kit | Complete Pistol Buffer System | Color Options Available
Important Product Information
This kit is supplied unassembled.
Lower receiver is not included.
Product images are representative and may not be an exact representation of the final product. Appearance and individual components may vary according to the selected configuration, availability, and color options.
