Mossberg 590 Shockwave Shock 'N' Saw 12 Gauge, 14.375 in Heavy-Wall Barrel, Breacher Muzzle, M-LOK Forend with Chainsaw Handle, Matte Black
This Mossberg 590 Shockwave Shock 'N' Saw stands out with its compact 14.375 in heavy-wall, cylinder-bore barrel capped by a breacher/stand-off muzzle, aluminum alloy receiver, and purpose-built M-LOK forend with a full-length bottom Picatinny rail and integrated chainsaw over-handle. It is chambered for 2.75 in and 3 in shells, carries a 5+1 capacity with 2.75 in shells, and maintains a 26.37 in overall length. This example includes Defender tactical rubber grip and recoil strap additions, plus a rear push-button QD sling swivel with a wrist/retention strap installed.
Factory features include the 590-series dual extractors, twin action bars, anti-jam elevator, and steel-to-steel lockup, paired with Mossberg's tang safety and a brass-bead front sight. The matte black receiver and black synthetic furniture complete a durable, no-nonsense configuration tailored to controlled handling in a compact format.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: The firearm is in great shape with minor, superficial scratches and blemishes from light handling. Surfaces present cleanly throughout.
What’s Included
- Mossberg factory cardboard box with end label (SKU 50647)
- Mossberg owner's manual (factory)
- Mossberg cable lock
- Rear push-button QD sling swivel with wrist/retention strap (installed)
- Rubber/elastic birdshead grip wrap marked 'DEFENDER' (installed)
The Shock 'N' Saw configuration centers on a 14.375 in heavy-wall barrel with a cylinder bore and breacher/stand-off muzzle, delivering a rugged front end designed for close-in control. Its compact 26.37 in overall length and approximate 6.0 lb weight keep the platform maneuverable without sacrificing core 590 durability.
The M-LOK forend features a full-length bottom Picatinny rail and an integrated chainsaw over-handle, adding secure purchase and accessory placement along the underside. A birdshead/Raptor-style polymer grip and brass-bead front sight round out the handling and sighting package in a simple, effective layout.
Built on an aluminum alloy receiver with a matte black finish, this 590-series action incorporates dual extractors, twin action bars, an anti-jam elevator, and steel-to-steel lockup. The tang safety provides intuitive operation, and the shotgun is chambered for both 2.75 in and 3 in shells with a 5+1 capacity when using 2.75 in shells.
Thoughtful additions on this example include a Defender tactical rubber grip and recoil strap for enhanced grip traction and retention. A rear push-button QD sling swivel with a wrist/retention strap is installed, offering an additional retention option that complements the Shock 'N' Saw's control-focused setup.