This is the ProMag 30 round .22LR magazine for the Walther .22 Tactical Series, including the Colt M4 and Colt M16.
Fits the following Walther/Umarex action models:
- Beretta ARX 160 .22
- Colt M4 .22
- Colt M166 .22
- Hammerli Tac R1*
- HK 416 .22*
- HK G36 .22
Will not fit AR-15 .22LR conversions, the magazines are sized differently for the Walther / Umarex mechanism.
*HK 416 and Hammerli Tac R1 rifles can ship with the bolt release lever screws a bit loose. Tighten fully and back off very slightly for best results on last round lock back.