SRU SARB15 Marui MWS GBB Short Cycling Bolt System – Black

Performance-Enhanced Bolt System for Tokyo Marui MWS GBB & SARB15 Builds

The SRU Short Cycling Bolt System is a drop-in upgrade designed for the Tokyo Marui MWS GBB platform, optimized for use with the SRU SARB15 bullpup chassis. It shortens the bolt's travel distance to increase cycling speed, reduce recoil lag, and improve firing responsiveness.

Faster Follow-Up Shots in Bullpup Configuration

Specifically engineered to complement the SARB15’s compact design and extended trigger linkage, this bolt system helps mitigate cycling delay caused by the bullpup trigger mechanics. The result is quicker follow-up shots and enhanced handling during fast-paced CQB scenarios.

CNC Aluminum Construction

Machined from lightweight CNC aluminum, the bolt carrier is designed for durability and long-term consistency under gas blowback pressure. Its refined geometry improves efficiency while reducing internal wear.

Nozzle Compatibility & Recommendations

No nozzle is included with this bolt system. For full compatibility and performance, the following nozzles are recommended:

• Tokyo Marui MWS Original Nozzle
• RA-Tech MWS Aluminum Nozzle
• G&P MWS Nozzle

Key Features

• Short-stroke bolt system for Tokyo Marui MWS GBB
• Optimized for SARB15 bullpup chassis setups
• Improves cycle speed and firing responsiveness
• CNC aluminum construction for lightweight strength
• Nozzle not included – several options recommended
• Drop-in installation, no modifications required