Description
The Archangel AA500 is a full stock-and-forend package built to modernize the Mossberg 500 and 590, along with compatible clones chambered in 12 gauge. Instead of the factory fixed stock, you get a six-position collapsible buttstock that adjusts from 11 to 14.25 inches of length of pull, so a big guy in a heavy coat and a smaller-framed shooter can both run the same gun comfortably. The whole system is molded from a carbon fiber and glass reinforced polymer that shrugs off weather and stands up to the usual gun solvents and oils, and the complete setup only tips the scale around 2.5 pounds.
What the AA500 Brings to Your Mossberg
The textured pistol grip is the heart of the upgrade. It gives you a more natural, controlled hold on the gun and hides a locking internal storage compartment for small essentials. Up top, the teardrop-shaped extension tube gives you a clean cheek weld for bead or barrel-mounted sights, and if you run raised irons or an optic, the included cheek riser snaps on for proper alignment. Recoil management is handled by an interchangeable-insert recoil pad, and both a soft and a firm insert come in the box so you can tune the feel to your load and preference.
Dialing In the Forend and Sling Setup
The military-length forend is where the AA500 shows its flexibility. It ships with a smooth fore-cap for a clean, snag-free profile, plus an aluminum tri-rail Picatinny adapter you can swap in when you want to hang a light or other accessory. Molded-in QD sling swivel points on both the left and right sides let you set up your sling however you carry, whether that is patrol style or a simple two-point.
Installation is a straightforward drop-in job on the Mossberg 500 and 590 platform, no gunsmith required for most folks. It is a practical way to make an already dependable pump gun fit better, carry better, and handle add-ons without piecing together parts from three different brands.
Key Specifications
- Manufacturer: Archangel (ProMag)
- Manufacturer Part Number: AA500
- UPC: 708279011153
- Product Type: Stock System
- Fits: Mossberg 500 / 590 and compatible clones, 12 Gauge
- Material: Carbon fiber and glass reinforced polymer
- Finish: Black
- Buttstock Positions: 6-position collapsible
- Length of Pull: 11 in to 14.25 in
- Weight: Approx. 2.5 lbs
- Grip: Ergonomic textured pistol grip with locking storage
- Sling Mounts: Molded-in QD swivel hard points, left and right
- Made In: USA
What’s Included
- Archangel AA500 pistol grip stock system
- 6-position collapsible buttstock
- Military-length forend
- Smooth fore-cap
- Aluminum tri-rail Picatinny accessory adapter
- Detachable cheek riser
- Interchangeable-insert recoil pad with soft and firm inserts
Frequently Asked Questions
Will the Archangel AA500 fit my shotgun?
The AA500 is designed for the Mossberg 500 and 590 in 12 gauge, along with compatible clones. If your pump gun is built on the Mossberg 500/590 platform, this system is meant to be a direct fit. Double-check your exact model against Mossberg's platform before ordering to be sure.
Does the AA500 come with the shell carrier?
No. This base AA500 model includes the stock, forend, tri-rail adapter, cheek riser, and recoil pad, but not the side-mounted shell carrier. If you want the version with the 7-round shell carrier, that is the AA500SC, which is a separate part number.
Can I install the Archangel AA500 myself?
For most people, yes. It is a drop-in upgrade for the Mossberg 500/590 platform and comes together with basic hand tools. If you are comfortable removing your factory stock and forend, you can handle this swap without a trip to a gunsmith.
How does the recoil pad tuning work?
The recoil pad uses interchangeable inserts, and both a soft and a firm insert ship in the box. You pick the insert that matches your load and how you like the gun to feel against your shoulder. It is an easy way to soften heavier 12 gauge loads or firm things up for lighter target rounds.




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