Home > Shop by CALIBER > 458 Socom >

Big Bore AR15 Upper Assembly .458 Socom or 450 Bushmaster - Shown here in Blue Titanium You Choose-Available in Any Color!!
Big Bore AR15 Upper Assembly .458 Socom or 450 Bushmaster - Shown here in Blue Titanium You Choose-Available in Any Color!!


 
Our Price: $599.99
Sale Price: $449.99
Savings: $150.00

Quantity in Stock:This item is currently out of stock.

SKU: BIGBORE-AR-UPPER-CYC


Bolt Carrier Group Add On:

Caliber Option(Choose):

Color:
Exclusive

Handguard Style (MLok or Keymod):

Have it assembled?:

Upgrade to Side Charging:
This option adds a side charging bolt carrier group in the caliber you select.
Splatter Upgrade

Splatter Upgrade (Set):
A total of 7 colors will be Splattered over your Base Color. Multi Cam Bright Green H-343, Multi Cam Dark Grey H-345, Graphite Black H-146, Desert Sand H-199, Magpul FDE H-267, Patriot Brown H-226, and Troy Coyote Tan H-268. When Battleworn is Added, Battleworn will be done over the Splatter Camo. Not Available over Gun Candy

Battleworn Set:
When Battleworn is selected, this will be the final coat over all other upgrades.

Qty:  
Description
 
The BigBore is available in .458 Socom or .450 Bushmaster. Need something new to add to your gun cabinet? Tired of your typical .223/5.56 and want something new to take to the gun range? Look no further!

Includes:

  • Anderson Manufacturing Big Bore Upper Receiver (In your color)
    • Upper Parts Kit
      • Milspec Black Charging Handle with Extended Latch (In your color)
      • Milspec Black Ejection Port Dust Cover
      • Milspec Black Forward Assist
  • Ergonomic 15" Lightweight Freefloat Handguard (available in Keymod or MLok)(In your color)
  • 16" Steel Black Barrel in your choice of .458 Socom or .450 Bushmaster
    • Appropriate Gas Block and Gas Tube
  • KAW Valley Precision 3.25" Magnum Linear Comp (In your color)
  • CQB 4x32 Compact Scope
    • Fiber Optic Built In Sight
    • 100% Shock, Recoil, Fog Proof and Nitrogen Filled
    • Red, Green, and Blue Illuminated with Glass Etched Reticle
    • Preset Parallax, Adjusted for 100 Yards
    • 5.5", 15.9 Oz
*When adding the Side Charging Upgrade, the bolt carrier group will be added in the caliber selected.

The cost of the upgrade includes a side charging upper receiver in color and a factory black side charging bolt carrier group in the caliber selected.

Share your knowledge of this product. Be the first to write a review »