ProMag COLA30 Standard 30rd 22 LR Fits Colt M4 Black DuPont Zytel Polymer Dummy Rounds The custom weave resists rolling

The custom weave resists rolling and twisting

two batteries and a storage case

30-30 Winchester WCF

This replacement or spare magazine is compatible with your GSG Firefly

this round was designed to be fired from the M1 Carbine a light military rifle that's garnered popularity with civilian shooters

ProMag COLA30 Standard 30rd 22 LR Fits Colt M4 Black DuPont Zytel Polymer Dummy Rounds The custom weave resists rollingThis replacement or spare magazine is compatible with your Colt M4. It is constructed of DuPont Zytel polymer with injection molded mag follower and mag spring formed from chrome silicone wire. Made in the USA. NOTE: This mag will not work with Ciener and G. I style 22 conversion rifles.