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10.5" Bull Barrel 458 Big Bore TLN Rail Upper w/LMC, BCG, CH & 10rd Mag
On Target With
Savings Of
$250.00
Original Price $799.99
Sale Price $549.99
LOADING...
Set your AR15 up with one of the largest and hardest hitting calibers available, the .458.  Built using our carbine length gas system 4150CMV bull barrel, a 12" free float Talon rail and a LMC (Linear Muzzle Compensator). This upper will attach to all standard mil-spec lower receivers and runs with the reliability and accuracy only Hardened Arms can deliver.

Shoots 458 Socom Ammo

AR-15 Upper Receiver Assembly:

  • Hardened Arms single M4 style Feed Ramp Flat Top Receiver
  • Single Feed ramp for increased feeding reliability on barrel and upper
  • Melonited 4150CMV .458 Big Bore 4150CMV Nitrogen Stress Relieved Barrel
  • Black Melonite Finish
  • 1/14 Barrel Twist
  • Chambered in .458 Big Bore
  • 10.5" Bull Barrel Profile barrel with M4 Extension
  • .936" diameter at gas block
  • 5/8x32 threaded muzzle/barrel
  • Low profile bull barrel gas block
  • Barrel dimpled to secure gas block
  • Carbine length gas system
  • Hardened Arms Linear Muzzle Compensator
  • Free float 12" Hardened Arms Talon Rail


458 Big Bore BCG,Charging Handle and 5 rd magazine:

  • Melonited 458 Big Bore AR15 bolt carrier group
  • Mil-spec Charging handle
  • 5 rd 458 Big Bore AR15 magazine


You are responsible for knowing your state laws regarding barrel lengths, pistol, short barreled rifle, and rifle restrictions. A 20% restocking fee will apply if you cancel anytime after ordering or 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.
 
515 Tucker Ave Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837