JAG PRECISION - ECHO1 - M28 Hop Up Bucking Matrix quick-change spring for upgrading or

quick-change spring for upgrading or downgrading the velocity to comply with field limits

Constructed from dense rubber T4E training munitions provide a safer and easier to utilize substitute to the traditional simunition training medium allowing for more flexible training scenarios

application needle

Easy to access and natural draw

JAG PRECISION - ECHO1 - M28 Hop Up Bucking Matrix quick-change spring for upgrading orFeatures: OEM replacement part Easy to install Allows for maximum adjustment Increases performance Manufacturer: Jag Precision Specifications: Size: 0. 25 X 0. 25 X 0. 5 IN Weight: 1 OZs Compatibility: Echo1 M28 Material: Rubber Package Includes: 1: Hop up bucking