AR-15 5.56/.223 5" Micro Pistol Kit – 1:5 Twist, Micro Buffer, 4" M-LOK Rail

5.56 NATO Micro Pistol Kit: Specs & Features

The AR-15 5.56/.223 5″ Micro Pistol Kit from Moriarti Armaments offers a compact and powerful AR pistol platform, designed for both performance and versatility. This micro AR-15 pistol kit is crafted with precision and durability, featuring Mil-Spec components made in the USA. It’s perfect for those looking for a compact, high-performance build, ideal for tactical operations or personal defense. This kit includes everything needed to complete your AR-15 pistol project, excluding the 80% lower receiver, allowing for a customized build.

Key Features:

• Barrel:

  • 5.5″ Heavy Barrel made from 4150 Chrome Moly Steel for enhanced durability and precision
  • 1:5 Twist Rate ideal for stabilization of lighter, high-velocity rounds
  • Chambered in 5.56 NATO, compatible with both 5.56 NATO and .223 Remington cartridges
  • Threaded 1/2x28 to fit most standard muzzle devices, with a thread protector included

• Gas System:

  • Micro Gas System for ultra-compact builds, offering reliable cycling and performance
  • .750” Gas Block Diameter, ensuring smooth operation with a low-profile steel gas block

• Upper Receiver:

  • M4 Flat Top Upper Receiver made from 7075-T6 Aluminum, ensuring strength and durability
  • Mil-Spec Forward Assist, Dust Cover, and Ejection Port Cover for reliable function in all conditions
  • Mini Shroud for added protection and a sleek design

• Handguard:

  • 4″ Slim Profile M-LOK Free Float Rail for easy accessory attachment and improved ergonomics
  • M-LOK design for versatile mounting options

• Bolt Carrier Group:

  • M16 Bolt Carrier Group, made from 8620 Steel, Nitride Coated, and Mil-Spec/MP Tested for superior reliability

• Buffer System:

  • AR-15 Micro Pistol Buffer Tube with a micro buffer and AR-15 spring to ensure smooth cycling
  • Includes Castle Nut and End Plate for secure installation

• Lower Parts Kit:

  • Complete AR-15 Mil-Spec Lower Parts Kit, ready for installation into your lower receiver

Specifications:

• Barrel Length: 5.5″
• Barrel Material: 4150 Chrome Moly Vanadium Steel
• Twist Rate: 1:5
• Gas System: Micro-Length
• Feed Ramps: M4
• BCG: Case Hardened 8620 Steel, Nitride Coated, M16, Mil-Spec/MP Tested
• Gas Block: .750 Low Profile Steel
• Gas Tube: Stainless Micro-Length
• Muzzle Device: Thread Protector
• Rail: 4″ M-LOK
• Upper Receiver: Forged 7075-T6 Aluminum
• Upper Components: Mil-Spec Forward Assist, Dust Cover, and Brass Deflector
• Pistol Buffer Tube and Micro Buffer for AR-15

Package Contents:

• AR-15 5.56/.223 5″ Micro Pistol Kit (assembled, without lower receiver)
• Complete AR-15 Lower Parts Kit
• AR-15 Micro Buffer and Buffer Tube Assembly
• Thread Protector
• 4″ M-LOK Rail
• Micro-Length Gas System Components

Note: This kit is unassembled, with all components included for building your AR-15 pistol. Please note that the rail design may vary slightly based on stock availability, but the quality remains the same. Images may not be an exact representation of the final product.

FAQ

Is a lower receiver included?

No. The kit ships without a lower receiver, so you complete it on your own lower. Check your state rules before ordering.

What magazines does it use?

Standard AR-15 / STANAG 5.56 magazines.

Related: 5.56 Micro ARP · all Micro ARP pistols and uppers