the X9 is backwards compatible with all previous Classic Army Nemesis series AEG upper receivers

Polymer Construction

while the bottom and top portions utilizes picatinny rails to attach a wide variety of accessories

This is designed to work with TM compatible variant airsoft guns

DOUBLE STEEL SPRING PROPELLER FOR SUPERIOR FPS RATING

Cybergun FN Herstal Licensed Magazine For VFC FNX-45 Gas Blowback Pistols (Color: Black) polarstar jack the X9 is backwards compatibleFeatures: Durable metal construction Licensed FNH trademarks Staggered 25 round capacity Injection molded polymer base plate High quality steel spring for consistent feeding Easy to fill gas valve Compatibility: Cybergun FNX 45Capacity: 25 roundsGas Type: Green gasManufacturer: Cybergun (VFC) FN Herstal