First Factory Sig Sauer MPX Battery Stop Gas Block

Currently out of stock across all retailers.

The First Factory Battery Block is designed to prevent batteries from popping out of the SIG AIR MPX AEG. This piece is made of metal and is a drop-in fit, it can also serve as a mock gas block, allowing you to retain the nice looks of the MPX without worrying about the battery wobbling or popping out of the gun. Made in Japan!