GG&G Mossberg 500 Side Saddle Shell Holder 6 Shot Side Saddle, Also fits 590 12ga. Tactical Shotguns

A GG&G Mossberg 500/590 side saddle shell holder is a quick-access ammunition carrier that mounts directly to the receiver of your tactical shotgun, keeping extra 12-gauge shells within arm's reach during shooting drills, home defense scenarios, or competitive events. Unlike mag-fed systems, a side saddle lets you load the magazine tube and chamber without breaking your grip or sight picture—critical when seconds count. GG&G's 6-shot design gives you reliable backup ammo storage without the bulk of a bandolier or pouch.

Installation is straightforward: this carrier requires zero modifications to your shotgun. The 6061-T6 aluminum construction keeps weight minimal while the non-marring backing plate protects your receiver finish. The design is proven on Mossberg's most popular tactical platforms, from LE and military applications down to civilian 3-gun and home defense setups.

One key compatibility note: this side saddle is engineered for short tactical-length forearms. If your 500 or 590 is fitted with a longer sporting-length foregrip, you'll need to swap it for a short tactical unit before installation. This isn't a limitation of the saddle itself—it's just how the geometry works on these guns. Once you've confirmed your forearm length, mounting takes minutes with basic tools.

Whether you're running your shotgun at the range, in training, or as part of a home defense system, a side saddle keeps your most-needed rounds exactly where you need them. GG&G's reputation in the tactical shotgun space is built on this kind of practical, no-nonsense hardware.

Key Features

• 6-shot 12-gauge shell capacity for quick reloads
• Mounts directly to Mossberg 500/590 receiver—no gunsmith work required
• Durable 6061-T6 aluminum construction
• Non-marring backing plate protects your receiver finish
• Works with short tactical forearms

Specifications

Brand	GG&G, Inc.
Gauge	12ga
Compatible Models	Mossberg 500, Mossberg 590
Shell Capacity	6 rounds
Material	6061-T6 Aluminum
Installation	No modifications required

Frequently Asked Questions

Does this side saddle fit all Mossberg 500 and 590 models?

It's compatible with 500 and 590 shotguns equipped with short tactical-length forearms. If your shotgun has a longer sporting-length foregrip, you'll need to replace it with a short tactical unit first. Once that's confirmed, the side saddle is good to go.

Will I need a gunsmith to install this?

No. The side saddle requires zero modifications to your shotgun and mounts directly to the receiver using basic tools. It's a field-installable upgrade.

What's the difference between a side saddle and other shell carriers?

A side saddle mounts to the gun itself, keeping rounds immediately accessible without reaching for a separate pouch or bandolier. For tactical or defensive use, that instant access is a real advantage.

What material is the backing plate made from, and why does it matter?

The backing plate is non-marring aluminum, which protects your shotgun's receiver finish from scratches or wear during installation and use—a thoughtful detail that preserves the gun's appearance and finish integrity.