The Windham Weaponry Varmint Exterminator complete AR-15 Upper Assembly has everything you need to turn your standard AR-15 into a Varmint assassin. Featuring a 20" Heavy Profile 416R Matte Stainless Steel Fluted Barrel, and a matched bolt and carrier machined from Carpenter 158 Steel. This design allows for the highest possible accuracy. Along with a 1:8" Twist rate, you will be able to shoot a little heavier grain bullet accurately. The matte finish allows for glare reduction while the flutes allow for some weight savings as well as rigidity. A Picatinny Railed Gas block is included should you decided to add a front sight.

Features and Specifications:
Windham Weaponry Complete Upper Assembly
Manufacturer Number: UR20FSSFTVB
5.56mm NATO (accepts .223 Remington)
20" Heavy Profile Matte Stainless Fluted
416R Stainless Steel Barrel
1:8" Twist
Rifle Length Gas System
Complete Bolt Carrier Group
Crown Muzzle
12" Aluminum Free Float Tube
Railed Gas Block
Charging Handle
Forward Assist
Ejection Port Cover
Black
Made in the USA

Fits:
AR-15 Lower Receivers

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