This is a made to order product. If out of stock, please contact us and we shall order this in for you.
100% Steel CNC Process, Outer Barrel Not Included
For TOKYO MARUI USP Compact GBB Use Only
Weight : 220g
Material : Stainless/Steel/Aluminium
Colour : Stainless Original
Note: Works best with Enhanced Light Weight Nozzle Housing (USP-28(A), Enhanced Loading Nozzle (USP-23) & Reinforced Nozzle Valve Set (USP-24)
Installation Tips - Pictures are listed for reference
- To remove original BBU, unscrew rear iron sight screws and then push BBU out, whilst holding the Slide and applying pressure outwards on the slide.
- Use original Nozzle set
- Remove Piston Lid from original BBU
- Install the small tension spring and Extractor onto Steel Slide first
- Install BBU/Nozzle Spring with brass bar
- Install Piston Lid whilst using the provided Philips head screw into the Alloy BBU
- Install Alloy BBU into Steel Slide
- Install Rear Ironsight
- Grease/Oil slide where applicable
- Install upper onto USP Lower