The FAB Defense M4-Style Collapsible Buttstock for the Mossberg 500 (FAB Defense part no. FXAGM500FK) is a direct-fit stock that gives the shotgun the six-position adjustability of an M4-style carbine stock. Made by FAB Defense, a well-known name in tactical shotgun and AR furniture, it lets a shooter adjust length of pull to match body armor, clothing layers or body size. It installs without gunsmithing or permanent modification to the receiver. For a 500 owner who wants faster, more comfortable shouldering, this is a straightforward upgrade.

Key Specifications

• The stock is a direct fit for the Mossberg 500, built specifically for that shotgun.
• It uses an M4-style collapsible format familiar from carbine stocks.
• Length of pull adjusts through six positions.
• It installs without gunsmithing or permanent modification to the receiver.
• The adjustment helps accommodate body armor or bulky clothing without changing shooting position.

Frequently Asked Questions

What shotgun does this stock fit? It is a direct-fit stock built specifically for the Mossberg 500.

Is the length of pull adjustable? Yes. It uses a six-position M4-style collapsible design.

Buy the FAB Defense M4-Style Collapsible Buttstock for Mossberg 500

Give your 500 fast, adjustable length of pull. Order this stock from our Lubbock, Texas gun shop for fast, insured shipping, and see our full range of shotgun stocks for more FAB Defense options.