Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
Dealer Login: Pass:
Click To Login | Become a Dealer
10.5 300 Blackout Quad Rail Complete Pistol With Sig Arm Brace
Return To Products | Proceed To Cart
Your Price $899.99
This product is not available for purchase.
10.5" 300 Blackout AR15 Tactical Quad Rail pistol with Sig Arm Brace
Complete pistols are accurate, reliable, head spaced, and test fired before shipping to your FFL.

Hardened Arms Lower:
  • Mil-Spec 7075 Forged Lower
  • Mil-Spec Dimensions
  • Mil-Spec Lower Parts Kit
  • AR15 Pistol buffer tube installed
  • Single point sling attachment point on eggplate
  • Works with all standard AR15 magazines (Does not come with Magazine)

Upper Assembly:

  • Hardened Arms M4 Feed Ramp Flat Top Receiver
  • Black anodized mil-spec finished upper receiver
  • Feed ramps for increased feeding reliability on barrel and upper
  • Laser etched T-Marked upper receiver
  • Chrome Moly High End Barrel
  • Black Mag-Phos Barrel Finish
  • 10.5 300 Blackout Barrel
  • .750" diameter at gas block
  • 5/8x24 threaded muzzle/barrel
  • Low profile gas block
  • Barrel dimpled to secure gas block
  • Pistol length gas system
  • A2 flash hider
  • Tactical Quad Rail free float 10" handguard WITHOUT end cap
  • Black Sig Arm Brace (Installed)
  • MAGAZINE NOT INCLUDED
Full Auto Chrome Lined Bolt Carrier Group
Mil-Spec Charging Handle

Hardened Arms rifles and pistols are high end, accurate, head spaced, inspected and test fired prior to shipping. They are built using stringent specs, top quality parts and procedures to ensure maximum reliability and performance.

You are responsible for knowing your state laws regarding barrel lengths, pistol, Short barreled rife restrictions, and rifles. 20% restocking fees if you can not take delivery due to state restriction. Dealer programs are available on our website. Two year warranty against manufacturer defects. Finishes will wear with use, no warranties apply to finish wear.

Pistol/Rifles must ship to FFL in your state, and may take up to 4 weeks for delivery depending on location and holidays. Magazine shown is not included with purchase. 
515 Tucker Ave, Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837