For М4 / М16 / МР-5 / SCAR

and durabilityDesigned for fast response

Form / Size Factor: Small Size

Thread Direction: 14mm Negative

while the lower receiver and stock use high quality

Prometheus Nozzle M16A2・M4・RIS・SR-16・M733・S-SYSTEM MB BE WHISPER For М4 / М16 /Prometheus Nozzle M16A2M4RISSR 16M733S SYSTEM Built in O ring for a superior air sealPOM Resin build The Prometheus air seal nozzle is a simple yet effective upgrade to your compression unit. The unique built in o ring enhances your air seal while being the perfect length for your chosen platform. Excellent feeding, loading, and firing of BBs allows you to optimize your air volume and air seal, for that perfect shot each and every time. The POM resin