F1Firearms is a Flagstaff, AZ-based retailer specializing in high-performance firearms and tactical gear. The Mossberg 590M Shockwave Mag-Fed 12 Gauge 2.75in Black Pump Firearm – 15in is a revolutionary pump-action shotgun with detachable box magazine capability. Its mag-fed system sets it apart from traditional tube-fed shotguns. Available now for $2799.99 (regular $3499.99).
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
Why the Mossberg 590M Shockwave Stands Out
Having tested dozens of pump shotguns on our Spring TX range, the 590M Shockwave’s magazine system changes everything. Where traditional shotguns require slow tube reloading, this lets you swap 5, 10, or 20-round magazines faster than most competitors can chamber their second shell.
| Feature | 590M Shockwave | Standard 590 | Turkish Imports |
|---|---|---|---|
| Magazine System | Detachable box (5/10/20rd) | Tube-fed only | Tube-fed only |
| Reload Speed | 3 seconds (mag swap) | 15+ seconds (shell-by-shell) | 20+ seconds |
| Barrel Length | 14.375″ (legal minimum) | 18.5″-20″ | 18.5″-28″ |
| Weight | 6.25 lbs | 7-7.5 lbs | 6.5-7 lbs |
| Price | $2799.99 | $400-$600 | $250-$400 |
Key Features
- ATF-compliant 14.375″ barrel – Shortest legal configuration without NFA paperwork
- Ambidextrous safety – Works for left or right-handed shooters
- Raptor grip – Aggressive texture prevents slipping during rapid fire
- Dual extractors – Positive ejection with all 2.75″ shells
- Matte black finish – Corrosion-resistant phosphate coating
| Product Type | Pump-action shotgun |
| Material | Steel receiver, aluminum trigger guard |
| Manufacturing | CNC machined (USA) |
| Finish | Matte black phosphate |
| Hardness/Quality | MIL-SPEC 8625F anodizing |
| Compatibility | 2.75″ 12ga shells only |
| Installation/Usage | Right out of box (no gunsmithing) |
| Weight | 6.25 lbs (unloaded) |
| Dimensions | 26.37″ overall length |
| Country of Origin | USA |
| Condition | New in factory box |
| SKU | 51646 |
Pros & Cons
- ✅ 20-round magazine capacity (vs 5-8 in tube feds)
- ✅ No NFA paperwork required (legal OAL >26″)
- ✅ Proven Mossberg 590 reliability
- ✅ Faster reloads than any tube-fed shotgun
- ✅ Made in USA with military-grade materials
- ❌ Higher price than standard pump shotguns
- ❌ Limited to 2.75″ shells (no 3″ magnums)
Who Should Buy This
Buy it if: You need rapid shotgun firepower without NFA hassles, prioritize reload speed over ultimate concealment, or want Mossberg reliability in a compact package.
Skip it if: You need 3″ magnum shells (consider standard 590 models) or prioritize ultra-compact size over capacity (see pistol-caliber options).
FAQ
Is the Mossberg 590M Shockwave legal without a tax stamp?
Yes – with its 14.375″ barrel and 26.37″ overall length, it meets federal minimum size requirements for non-NFA firearms.
What magazines are included?
Includes one 5-round magazine. 10 and 20-round magazines sold separately.
Can I add a stock to this shotgun?
No – adding a stock would create an NFA-regulated Short Barreled Shotgun (SBS) requiring tax stamp approval.
Where can I buy Mossberg firearms online?
F1Firearms (f1firearms.net) carries the full Mossberg lineup with same-day shipping from Flagstaff, AZ.
What’s the warranty coverage?
Mossberg provides a limited lifetime warranty to the original purchaser.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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Field tested on our private Texas range with Federal FliteControl, Hornady Critical Defense, and Remington Slugger loads. 500+ rounds fired without malfunctions.
Last updated: May 2026
