About 300 Arms

300 Arms is a custom firearm maker located in Northern Colorado. We specialize in hand building firearms, laser engraving, CeraKoting and GunKoting. We also carry a full line of gun parts and accessories, including magazines, for all your shooting needs.

Featured Products

Custom 5.56 X 45 Mama Bear Rifle
$1,599.00
Back Order.
5.56 x 45 Thor's Hammer
$1,959.00
In Stock.

Visit us at local gun shows or shop online

We love our customers, so come see us at the gun shows in Loveland, Longmont, Greeley, Denver, Colorado Springs and Pueblo.
 

Firearms | 80% Lowers | Magazines | Ejection Port Covers | Charge Handles

 

300 Arms Corp

Wellington, Colorado, United States
(970) 632-2729

 


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