Upgrade your shotgun with the TRINITY Aluminum Saddle Mount with Shell Holder, compatible with Mossberg Maverick 88 and Mossberg 500 series 12 gauge pump shotguns. This rugged saddle-style mount provides a stable full-length top Picatinny rail for optics along with a removable side rail and a 5-round shell holder for fast access to ammunition.
The one-piece saddle design straddles both sides of the receiver and installs using existing pin portsโno gunsmithing or special tools required. Precision-machined from lightweight aircraft-grade aluminum with a matte black anodized finish, this mount is built to handle recoil while maintaining a slim, contoured fit.
The included aluminum shell holder attaches to any Picatinny rail and securely holds five 2 3/4" or 3" 12-gauge shells. Whether youโre setting up for home defense, hunting, or range use, this kit delivers durability, versatility, and improved functionality.
Compatible with Mossberg Maverick 88 and Mossberg 500 12 Gauge pump shotguns
One-piece saddle mount straddles both sides of the receiver
Full-length top Picatinny rail (5.75") with 13 slots
Removable side Picatinny rail (3.5") included
Works with scopes and red dot sights using Weaver / Picatinny rings
Lightweight aircraft-grade aluminum construction
Matte black anodized non-glare finish
Easy installation using existing receiver pin ports
Includes aluminum Picatinny-mounted shell holder
Shell holder capacity: 5 rounds (2 3/4" or 3")
Shell holder secures shells against movement and recoil
Mount Specs:
Weight: 5 oz
Length: 6.8"
Width: 1.75"
Height: 2.25"
Shell Holder Specs:
Weight: 5 oz
Length: 4.75"
Width: 1"
Height: 1.5"

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