Compatible with:
- Any size AR-15/M16 5.56/.223 magazines (NATO STANAG 4179)
- Magpul PMAGs
- H&K metal 416/SA80
- Beretta AR 70-90
- Thermold
- Orlite
- SIG Arms (black mags)
- 10-round stripper clips or loose rounds (5.56 for sure, possibly others)
- May work with some 6.8mm and 6.5mm Grendel mags