ALL AMMUNITION AND MAGAZINES SHIP ADULT SIGNATURE REQUIRED.
The Sig Sauer MAG-MOD-F-9-21 is a factory 21 round extended magazine chambered in 9mm Luger built specifically for the P320, P250, M17, M18, and P211 GTO pistol models with steel body construction and blued finish for shooters who need increased capacity and reliable feeding in their full-size duty and competition pistols.
Key Features
- Model number: MAG-MOD-F-9-21
- UPC: 798681555253
- Caliber: 9mm Luger
- Capacity: 21 rounds
- Magazine type: double stack extended
- Body construction: steel with blued finish
- Baseplate: polymer extended
- Follower: anti-tilt polymer
- Spring: high-tensile steel
- Witness holes: side witness holes for round counting
- Magazine type: detachable extended
- Length: 9.55 inches
- Weight: 0.35 lbs
- 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
- Blued steel body construction ensures consistent magazine geometry and feeding reliability
- Extended capacity design adds 4 additional rounds over standard 17 round magazines
- Anti-tilt polymer follower maintains proper feeding angle throughout all 21 rounds
- Side witness holes enable quick visual confirmation of remaining rounds
- Factory OEM magazine built to exact Sig Sauer specifications for consistent fit and function
- High-tensile steel spring provides consistent tension and reliable feeding across extended loading cycles
- Removable polymer extension baseplate allows quick disassembly for maintenance and cleaning
- Double stack design maximizes capacity while maintaining manageable grip width
Practical Benefits
- Extended 21 round capacity increases ammunition supply by 24 percent over standard magazines for competition, duty carry, and range training
- Steel construction withstands repeated use and high round counts for competitive shooters and law enforcement
- Blued finish provides corrosion resistance for duty carry in various weather conditions
- 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
- Extended design provides significantly more ammunition on hand for competition shooters and high volume training
- Removable extension baseplate allows thorough cleaning and maintenance between shooting sessions
The Sig Sauer MAG-MOD-F-9-21 P320 and P250 Magazine in 9mm Luger with 21 round extended capacity is a solid fit for competitive shooters, law enforcement officers, and tactical trainers who need increased capacity with factory reliability in the P320, P250, M17, M18, and P211 platforms.
| MANUFACTURER | SIG SAUER |
| CALIBER | 9MM |
| CAPACITY | 21 ROUNDS |