SKU: 5082d2478e11 Categories: , , ,


Windham Weaponrys 450 Thumper semi-automatic utilizes a gas impingement system. The flattop upper receiver is forged 7075 T6 aircraft aluminum with an aluminum trigger guard, carpenter 158 steel bolt, and manual lever safety. The receiver is with laser engraved the caliber and has safety indicator markings on both sides. The 450 Thumper has a 16 chrome-lined barrel made of 4150 Chrome Moly Vanadium 11595E steel with an A2 flash suppressor. It has a Luth-AR buttstock with an adjustable buttplate and cheekrest, WW free-float forend, and Hogue overmolded beavertail pistol grip. It includes a 5-round magazine, black web sling, and hard plastic gun case.


Action Semi-Auto
Caliber 450 Bushmaster
Barrel length 16″
Capacity 5+1
Safety Lever
Oal 35.63″
Weight 7.20 lbs
Stock description Fixed Luth-AR w/Adjustable Checkpiece
Metal finish Black Hardcoat Anodized
Muzzle A2 Flash Suppressor
Receiver material 7075 T6 Aluminum Forged
Sights None, Optic Ready
Barrel description 4150 Chrome Moly Vanadium Chrome-Lined
Twist 1:24″
Barrel length range 16.00″ to 16.99″
Weight range 7.00 lbs to 7.99 lbs
Hand Right
Stock finish group Black
Metal finish group Blued/Black