The Moriarti AR-15 .300 AAC Blackout 5" Micro Pistol Kit is a compact and powerful option for shooters looking to build an ultra-short, maneuverable firearm without compromising on quality or performance. This kit includes everything needed to complete your AR-15 pistol build—except for the stripped lower receiver.
Featuring a 5" 4150 CMV chrome moly barrel with a 1:7 twist rate and a micro gas system, this kit delivers reliable cycling with supersonic and subsonic loads. A 4" M-LOK free float handguard allows for lightweight accessory mounting, while the included micro buffer tube and spring assembly ensure a compact footprint ideal for close-quarters or vehicle applications.
Barrel: 5.5" 300 AAC Blackout, Chrome Moly, 1:7 Twist
Thread Pitch: 5/8x24
Gas System: Micro-Length
Gas Block: .750" Low Profile Steel
Gas Tube: Stainless Steel Micro
Muzzle Device: Thread Protector
Upper Receiver: M4 Flat Top Forged 7075-T6, Includes Forward Assist & Dust Cover
Handguard: 4” Slim Profile Free Float M-LOK
Mini Shroud: Included
Bolt Carrier Group: M16 Profile, Case Hardened 8620 Steel, Nitride Coated, MP Tested
Charging Handle: AR-15 Mil-Spec
Lower Parts Kit: AR-15 Mil-Spec Complete
Pistol Buffer System: Micro Buffer Tube, AR-15 Spring, 3oz Buffer
Hardware: Castle Nut, End Plate
Platform: AR-15
Chamber: .300 AAC Blackout
Receiver Fit: Works with all Mil-Spec AR-15 lowers
No FFL Required: Ships directly to you
Please Note: Comes unassembled. Images may not be an exact representation of the product. Design of rail may differ based on stock availability, the same excellent quality.
Tags: ar-15, .300, blackout, 5", micro, pistol, kit, 1:7, twist, buffer, 4", m-lok, rail