these magazines are designed to be very strong

The endbell retaining ring is made out of metal so it won't strip

FIRE MODE SELECTOR MODES INCLUDE FULL-AUTO

Operation: CO2 Non-Blowback

& Low Battery Detection

Noveske KX5 Black Flash Hider w/ Built-In ACETECH Lighter S Ultra Compact Rechargeable Tracer- face these magazines are designed toBlue in color These are a perfect edition to your cusomt built Airsoft setup . Features Smallest barrel mounted tracer unit in Airsoft with Built In ACETECH Lighter S Ultra Compact Tracer Improved illuminator for enhanced BB glow activation for an ultra bright trace Sustained ROF up to 35 rounds per second Rechargeable built in Lithium Polymer battery; fully charged battery will last over 22,000 rounds. Open the flash hider and charges via micro USB