The Mec-Gar MGCG4511B delivers reliable feeding and extended capacity for 1911 Government models chambered in .45 ACP. This 11-round magazine increases standard capacity by 4 rounds while maintaining the proven reliability that makes Mec-Gar the OEM supplier for major firearm manufacturers worldwide. Carbon steel construction with anti-friction coating ensures consistent performance across thousands of rounds.
What Makes This Different
Mec-Gar magazines feature precision-stamped carbon steel bodies with welded seams, not folded construction like many aftermarket alternatives. The proprietary anti-friction coating reduces wear on both magazine and pistol components while improving feeding reliability. Heat-treated springs maintain consistent tension through extended use, rated for over 10,000 compression cycles without performance degradation.
Key Features
- 11-round capacity increases standard 7-round magazines by 57% without reliability compromise
 
- Carbon steel body construction with welded seams for maximum durability
 
- Anti-friction black coating reduces component wear and improves feeding
 
- Heat-treated music wire springs maintain consistent tension
 
- Compatible with 1911 Government 5-inch models in .45 ACP
 
- Removable polymer baseplate with witness holes for round counting
 
- Drop-free design ensures reliable magazine changes under stress
 
Range testing demonstrates consistent feeding with various .45 ACP loads including hollow points, ball ammunition, and match-grade rounds. The extended capacity proves valuable for competitive shooting disciplines like USPSA and IDPA where magazine changes impact stage times. Law enforcement and military units rely on Mec-Gar magazines for duty applications requiring maximum reliability. The anti-corrosion coating withstands exposure to cleaning solvents and environmental conditions.
Technical Specs
- Capacity: 11 rounds of .45 ACP
 
- Compatibility: 1911 Government 5-inch models
 
- Body Material: Carbon steel with welded construction
 
- Finish: Black anti-friction coating
 
- Spring: Heat-treated music wire
 
- Follower: High-impact polymer with anti-tilt design
 
- Country of Origin: Italy
 
- UPC: 765595440319
 
Mec-Gar's reputation as an OEM supplier to Beretta, Sig Sauer, and other major manufacturers validates their engineering standards and quality control processes. This magazine ships ready for immediate use with no break-in period required.