The FAB Defense Vanguard M-LOK Handguard is a polymer replacement fore-end for the 12 gauge Mossberg 500 and 590 (FAB Defense part no. FXVAN500B). It brings an M-LOK interface to the shotgun in a slim, durable design, so lights, foregrips and slings mount straight to the handguard. FAB Defense tested it to withstand rapid fire and builds it with the professional user in mind. This version is black, and the install needs no gunsmith.

Key Specifications

• The handguard fits 12 gauge Mossberg 500 and 590 shotguns.
• The interface is M-LOK, which accepts M-LOK accessories directly or M-LOK 1913 Picatinny rail sections.
• Construction is durable polymer, a material that keeps the weight low and resists impact.
• The profile is slim, so the fore-end stays slim in the hand.
• The color is black, which matches the rest of a tactical shotgun setup.
• Weight is 163 grams, which adds little to the front of the gun.
• Installation needs no gunsmith, so the handguard goes on as a direct-fit swap.

Frequently Asked Questions

Which shotguns does the Vanguard 500 fit? FAB Defense lists it for 12 gauge Mossberg 500 and 590 shotguns.

What can I mount on it? Its M-LOK slots accept M-LOK accessories directly, and it also takes M-LOK 1913 Picatinny rail sections, so lights, foregrips and slings can attach to the handguard itself.

Is it installed by a gunsmith? No. FAB Defense says installation is easy and no gunsmith is required.

Buy the FAB Defense Vanguard M-LOK Polymer Handguard for Mossberg 500/590, Black

An M-LOK handguard gives a pump shotgun the same accessory flexibility as a modern carbine without a bulky clamp-on rail. Order the Vanguard from our Lubbock, Texas gun shop for fast direct shipping, and see more shotgun accessories and parts while you are here.