TacStar Slimline Sidesaddle Shell Holder - Low-Profile 12 ga Mount

In this review of the TacStar Slimline Sidesaddle Shell Holder we look at a simple, durable option for shooters who want extra 12 ga shells mounted on the receiver for faster reloads. The bottom line: this product is for Mossberg 500/590 and Maverick 88 owners who value a low-profile, weather-resistant shell carrier that stays out of the way while keeping rounds within easy reach. Installation is straightforward and the contoured anodized backing reduces snag points, making it a practical addition for field use or range sessions.

Key Features

• Model fit: Designed to fit Mossberg 500, 590 and Maverick 88 receivers so buyers know it will mount cleanly without modification.
• Low-profile backing: The contoured anodized aluminum backing plate sits flatter against the receiver to minimize bulk and reduce potential snagging when moving in brush or on a range.
• Synthetic rubber carrier: The proprietary flexible synthetic rubber holds shells securely while also offering weather resistance for use in wet conditions.
• Secure retention: The shell carrier is engineered to retain 12 ga shells in a compact layout so rounds are available for a quick reload without adding excess weight.
• Sleek appearance: Smaller carrier size and non-glare finish create a discreet look that maintains the shotgun's profile.
• Durable construction: Materials chosen for long-term use mean the holder resists everyday wear common to hunting and range use.

Who It's For

The Slimline SideSaddle is best for shooters who want a tidy, receiver-mounted shell option and who own a compatible 12 ga Mossberg 500, 590 or Maverick 88. It suits hunters and recreational shooters who prioritize quick access and a non-bulky install.

Those who need a universal fit for multiple shotgun models, or who require rail-mounted accessories or larger shell counts, should look elsewhere; this unit is specific to the models listed and is built for a minimal shell complement rather than high-capacity storage.

Pros & Cons

Pros

• Easy installation that typically mounts directly to the receiver with minimal tools and time.
• Durable synthetic rubber carrier provides weather resistance and a tidy look on the gun.
• Contoured anodized aluminum backing reduces snag points and keeps the profile slim while offering secure attachment.
• Designed specifically for Mossberg 500/590 and Maverick 88 for a clean fit without drilling or modification on compatible models.

Cons

• Fit and shell retention are mixed in reports, with some users noting shells can loosen over extended use, so periodic check is advised.
• Made for 12 gauge only, so it is not suitable for other gauges or for shooters wanting higher shell capacity on the receiver.

Specifications

Brand	TacStar
Compatible Models	Mossberg 500, 590, Maverick 88
Gauge	12 ga only
Backing Material	Non-glare anodized aluminum
Shell Carrier Material	Proprietary flexible synthetic rubber
Mount Style	Receiver-mounted low-profile SideSaddle

Our Verdict

The TacStar Slimline Sidesaddle Shell Holder is a practical, low-profile option for 12 ga Mossberg 500/590 and Maverick 88 owners who want quick access to extra shells without adding bulk. Its contoured backing and weather-resistant synthetic carrier make it good value for those seeking a neat receiver mount, though buyers should check retention periodically to ensure shells stay secure over heavy use.

Frequently Asked Questions

Will this fit my shotgun?
It fits Mossberg 500, 590 and Maverick 88 receivers only; it is not a universal fit.

What gauge does it support?
This SideSaddle is made for 12 ga shells only and will not accommodate other gauges.

Is installation difficult?
Installation is straightforward and typically requires only basic tools and a few minutes to mount to the receiver.