Mec-Gar
Rock Island Armory GI Standard FS Threaded Magazines
Browse parts and check the source behind each answer.
All Rock Island Armory models · magazines →
Manufacturer
Rock Island Armory
Model & version
GI Standard FS Threaded
Mounting details
Not recorded
Parts listed
3 total
What the compatibility labels mean
How we knowHow we check compatibility
- Lab testedFit checked by Firearm Lab for the recorded setup.
- Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
- Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.
Check your exact model and part before ordering. Fitment limits
Mec-Gar3
Based on manufacturer information — Oct 2026. 1911 Full Size .45 ACP 7-Round Magazine
Part no. MGCG4507B1911 Full Size .45 ACP 8-Round Magazine
Part no. MGCG4508BPF