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The Sig Sauer MAG-MOD-F-9-21-COY is a factory 21 round extended magazine chambered in 9mm Luger built specifically for the P320, M17, M18, and P211 GTO pistol models with steel body construction, anti-friction coating, and coyote tan polymer baseplate for shooters who need increased capacity with color-coordinated components in their full-size duty and competition pistols.
Key Features
- Model number: MAG-MOD-F-9-21-COY
- UPC: 798681599592
- Caliber: 9mm Luger
- Capacity: 21 rounds
- Magazine type: double stack extended
- Body construction: steel with anti-friction coating
- Baseplate: polymer extended with coyote tan finish
- Follower: injection-molded anti-tilt polymer
- Spring: high-tensile steel wire
- Witness holes: side witness holes for round counting
- Finish: black body with coyote brown baseplate
- Magazine type: detachable extended
- Pistol size: full-size and carry
- Compatibility: P320 X-Five, P320 X-Full, P320 X-Carry, P320 Full-Size, P320 Full-Size X, P320 Carry, P320 Carry X, M17, M18, P250 Full-Size, and P211 GTO with factory magwell installed
Special Features
- Coyote tan extended baseplate coordinates with M17, M18, and FDE pistol finishes for color matched appearance
- Anti-friction coating provides enhanced lubricity for smooth feeding and reliable function
- Steel body construction ensures consistent magazine geometry and feeding reliability
- Injection-molded polymer follower maintains proper feeding angle throughout all 21 rounds
- Side witness holes enable quick visual confirmation of remaining rounds
- Extended capacity design adds 4 additional rounds over standard 17 round magazines
- High-tensile steel wire spring provides consistent tension and reliable feeding across extended loading cycles
- Removable polymer extension baseplate allows quick disassembly for maintenance and cleaning
Practical Benefits
- Extended 21 round capacity increases ammunition supply by 24 percent over standard magazines for competition, duty carry, and range training
- Coyote tan baseplate matches popular M17, M18, and FDE pistol finishes for coordinated appearance
- Steel construction with anti-friction coating withstands repeated use and high round counts for competitive shooters and law enforcement
- Extended baseplate improves grip stability and control during rapid fire and competition stages
- Side witness holes provide instant capacity confirmation during competition stages or training drills without removing magazine
- Compatible across P320 X-Five, Full-Size, Carry, M17, M18, P250, and P211 models for shooters who run multiple pistol variants
- Factory build quality ensures drop-free performance and consistent function for defensive and competitive use
- Removable extension baseplate allows thorough cleaning and maintenance between shooting sessions
The Sig Sauer MAG-MOD-F-9-21-COY P320 and M17 Magazine in 9mm Luger with 21 round extended capacity and coyote tan baseplate is a dependable option for M17/M18 users, competitive shooters, and law enforcement officers who need increased capacity with factory reliability and color-coordinated components in the P320, M17, M18, P250, and P211 platforms.
| MANUFACTURER | SIG SAUER |
| CALIBER | 9MM |
| CAPACITY | 21 ROUNDS |