Blowback Armory - The Airsoft & Gas Blowback Rifle Specialist

Convert your older Closed Chamber WE M4 type rifle to the newest Open Chamber system, or completely overhaul your existing Open Chamber rifle!

This kit is all you need to completely convert your older closed chamber "brass tube" WE rifle into the latest WE Open Chamber system, as well as update ALL of the gun's internals. With the latest Open Chamber conversion done on your rifle, you will notice much higher accuracy and range than with your old closed chamber gun, as well as much more parts availability, as well as more effective parts. Your recoil will increase, as will your rate of fire. This latest design even boasts higher reliability and longevity due to a complete upper receiver internal redesign, as well as enhancements and reinforcements done to crucial parts in the lower receiver. The redesign of the upper receiver internals results in a much more realistic bolt design while still retaining efficient gas consumption. Due to the nature of the design, the rifle is now also much easier to "dial-in".

The parts in this kit are mostly pre-assembled, so only require basic to intermediate level experience to install.

• Complete "Drop-In" Front Set Internals (Hopup Assembly to Inner barrel)
• Complete "Drop-In" Bolt Carrier Assembly (Nozzle Pre-Installed)
• Complete "Drop-In" Trigger Box and Firing Assembly (Includes New Valve Striker and Disconnector)
• Allen Key Included for Hopup Adjustment (Accessed from inside the upper receiver, at the top of the hopup)
• Punch Tool for Removal of Lower Receiver Internals
• New Open Chamber Bolt Catch
• One Free Set of Open Chamber Magazine Conversion Pieces