Promag121685921
Promag Fn Fv Sv 5.7x28mm 55rd Dm Fde$96.84
Availability: In Stock
The ProMag FN 5.7x28mm AR-15 55-round drum magazine delivers high-capacity firepower for shooters running the modern 5.7x28 AR platform. Built with a hybrid construction that pairs mil-spec polymer with heat-treated steel internals, this drum is engineered to feed reliably through extended range sessions, competitions, or training scenarios where magazine capacity matters. At 55 rounds, it's a serious upgrade from standard box magazines—the kind of accessory that keeps you in the action longer and cuts down on reload time.
Construction matters with drum magazines. ProMag combines traditional metalworking with modern polymer injection molding here: the magazine body uses a proprietary DuPont Zytel-based polymer for durability and weight savings, while the upper magazine tower is blue steel and the follower is injection molded to strict tolerances. The magazine spring is formed from heat-treated stainless steel, so it will resist fatigue and corrosion through hundreds of cycles. The result is a domestic-made (USA) drum that balances ruggedness with the kind of reliability you need when you're counting on your magazines to perform.
Worth noting: this drum is built specifically for FN 5.7x28mm AR-pattern rifles and carbines—it does not fit FN 5.7 pistols. ProMag backs every magazine with a lifetime manufacturer's defect warranty, so you're covered if anything fails due to a flaw in materials or workmanship. For AR shooters who want to run the 5.7 platform with serious magazine capacity, this is a no-nonsense option.
| Caliber | 5.7x28mm |
| Platform | FN 5.7x28mm AR-pattern carbine |
| Capacity | 55 rounds |
| Magazine Type | Drum magazine |
| Magazine Body Material | Proprietary DuPont Zytel-based polymer |
| Upper Tower Material | Blue steel |
| Follower | Injection-molded polymer |
| Spring Material | Heat-treated stainless steel |
| Country of Origin | USA |
| Warranty | Lifetime manufacturer's defect warranty |
No. This magazine is designed for FN 5.7x28mm AR-pattern rifles and carbines only. It does not fit FN 5.7 pistol models.
This is a 55-round drum magazine, providing substantial firepower for extended training, competition, or range sessions before a reload is needed.
The magazine body is made from a proprietary DuPont Zytel-based polymer for durability and weight efficiency. The upper tower is blue steel, the follower is injection molded, and the magazine spring is formed from heat-treated stainless steel to resist fatigue and corrosion.
Yes, the ProMag FN 5.7x28mm drum magazine is manufactured in the USA and is backed by a lifetime warranty against manufacturer's defects.
SKU: 115654214 • Width: 7in • Height: 4in • Depth: 14in • Weight: 1.69oz