Build Your Own Custom MTW Upper!

MTW Custom Upper Builder

Upper Receiver Group

Required


Barrel Length (Outer Barrel)

Required


Hop and Barrel Assembly

Required


Engine

Optional


Engine Required Parts

Depends on Engine


Air Supply

Depends on Engine


Rail

Required


Muzzle Device

Optional


Sights

Optional - Multi-select


Rail Accessories

Optional - Multi-select


Optional Add Ons

Optional - Multi-select


Assembly

Required
Optics, Mounts, Suppressors, and all other external accessories do not ship installed / mounted.