AR-9 9MM 5.5" Beware Pistol Build Kit – Forged Upper, 4" Handguard, Non LRBHO

Product Code:MAR-9-5-BEWARE-KIT
Availability:In Stock
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  • $399.95

  • $599.95

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Build Kits

AR-9 9MM 5.5" 'Beware' Pistol Build Kit – Forged Upper, 4" Handguard, Non LRBHO

AR-9 9MM 5.5" 'Beware' Pistol Build Kit – Forged Upper, 4" Handguard, Blowback Gas System

Build your ultimate AR-9 9MM Pistol with this 5.5" 'Beware' Pistol Build Kit, featuring a Forged Upper Receiver and a 4" handguard with a Beware Skull and Crossbones dust cover. This comprehensive kit offers top-quality mil-spec components, designed to deliver reliable and smooth performance. With a blowback gas system, this kit is ideal for enthusiasts building a Glock-style AR-9 pistol (80% lower receiver sold separately). Crafted with USA-made parts, it ensures excellent reliability and durability for your next custom 9MM pistol project.


Key Features:

Barrel:

  • 5.5" 9MM Barrel made from 4150 Contour Chrome Moly Vanadium steel
  • 1:10 Twist Rate for optimal bullet stabilization and performance
  • 1/2x36 Threading for compatibility with standard 9MM muzzle devices
  • Blowback Gas System with no gas block needed for easy operation
  • Crush Washer included for secure muzzle attachment

Upper Receiver:

  • Forged AR-15 Upper Receiver made in the USA, ensuring maximum strength and precision
  • No Forward Assist for a cleaner, more minimalist look
  • Features Beware Skull and Crossbones Dust Cover Assembly for a unique, personalized touch

Handguard:

  • 4" M-Lok Free Float Handguard made from aircraft-grade aluminum and black hardcoat anodized for strength and durability
  • Slim profile design for improved handling and accessory mounting flexibility

Charging Handle:

  • AR-15 Tactical Charging Handle for smooth and easy cycling of your pistol

Muzzle Device:

  • A2 Muzzle Brake for 1/2x36 threads, featuring 5 ports for enhanced recoil control and muzzle rise mitigation

Lower Parts Kit:

  • AR-15 Lower Parts Kit with standard grip and trigger guard for a complete lower receiver assembly
  • Includes all necessary components for the lower receiver (80% lower receiver sold separately)

Buffer System:

  • AR-15 Complete Pistol Buffer Tube Kit with 7oz buffer and AR-15 spring for smooth cycling and better recoil management

Compatibility:

  • Works with Glock-style lower receivers (requires adapter for Glock mags or Colt magwell)
  • Designed for Blowback gas system, no additional gas block needed for operation

Assembly Information:

  • Comes unassembled for easy customization and flexibility
  • 80% lower receiver and magazines are sold separately

NOTE: Images may not be an exact representation of the product. 

coffman 06/01/2020

After receiving the kit and performing all the milling process and assembly, the looks are awesome and everyone compliments it! Upon function testing it with 115gr 9mm several brand majority federal brand factory loads it would not cycle properly and malfunctioned firing multiple rounds with one trigger squeeze. Swapped trigger and safety out for a standard mil spec that I knew functioned properly to see if that was the issue and had same issue. I did a lot of reading and function testing to see if anything helped but came to the conclusion that it needed 124gr rounds which function flawless!!! Took about 2 weeks and lots of testing but finally have a completely reliable firearm! Unsure as to what may have caused the issue buffer, buffer spring, or any number of possibilities. Great kit and parts, may have been a mix up but this was my experience

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Tags: ar-9, 9mm, 5.5", beware, pistol, build, kit, , forged, upper, 4", handguard, non, lrbho 5.5", 4" 5.5", 4"

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