Mossberg 590 Shockwave Picatinny Rail Mount & 6-Shell Holder Combo – 12 Gauge

✅ Key Features

• Holds up to 6 × 12 gauge shells

• Integrated Picatinny / Weaver 1913 rail base

• Compatible with Mossberg 500, 590, 590A1 & Shockwave

• Ambidextrous side-mount design (left or right side installation)

• Installs using factory receiver mounting holes

• Two-piece system designed to function as a single combined unit

• Durable lightweight aluminum construction

• Low-profile compact design

✅ Product Description

Upgrade your Mossberg platform with the Picatinny Rail Mount & 6-Shell Holder Combo for Mossberg 590 Shockwave, combining onboard shell storage and an integrated accessory mounting base into one compact unit.

This side-mounted carrier securely holds up to six 12-gauge shells, keeping spare shells organized and easily accessible. The ambidextrous design allows installation on either side of the receiver, suitable for right- or left-handed shooters.

The integrated Picatinny rail base provides a solid mounting point for compatible optics and accessories. The system features a two-piece design engineered to function as a single combined unit—the shell holder and rail cannot be installed separately using the included hardware.

Designed to install directly into the factory mounting holes of Mossberg 500 and 590 series receivers with no additional gunsmithing required. Also compatible with Mossberg Shockwave, 535, 835, and 590A1 models.
Note: Pre-1997 Mossberg receivers use a different hole pattern and may require 6x48 TPI screws (not included).

Built from lightweight aluminum, this combo delivers strength, reliability, and a low-profile footprint—ideal for range use, outdoor applications, and platform customization.

Specifications:

• Capacity: 6 shells (12 Gauge)

• Mount Type: Receiver side mount with integrated Picatinny rail

• Material: Aluminum

• Weight: 4 oz

• Length: 6 in

• Width: 2 in

• Height: 1.75 in