Build Your Own Custom MTW Upper!
MTW Custom Upper Builder
Upper Receiver Group
RequiredBarrel Length (Outer Barrel)
RequiredChoose Length Range
Select a length range to reveal matching outer barrel options.
Hop and Barrel Assembly
RequiredEngine
OptionalEngine Required Parts
Depends on EngineAir Supply
Depends on EngineRail
RequiredMuzzle Device
OptionalSights
Optional - Multi-selectRail Accessories
Optional - Multi-selectOptional Add Ons
Optional - Multi-selectAssembly
Required
Optics, Mounts, Suppressors, and all other external accessories do not ship installed / mounted.