ERGO Adaptor + BCM Gunfighter MOSSBERG 500 6 Position Stock Adaptor 12 Gauge Shotgun


About the Stock Tube:

-The ultimate upgrade for the home defense shotgun builder.
-Made in the USA
-Fits Milspec Buffer.
-Aluminum buffer tube included
-Excellent around tight corners and home home or office.
-The ultimate tactical shotgun setup, ideal for your home-defense gun.
-Perfect for Telescoping stock with adjustable length of pull, adjusts to thick clothing or body armor.
-Milspec tube and Milspec castle nut included (no spring required)

About the Grip & Stock:

-Includes BCM Gunfighter Upright Grip (Mod 3)
-Includes BCM Gunfighter (Mod 0 Stock)

Technical Information:

Mil-Spec Stock:

Tube Diameter: 1.145″ to 1.150″
Weight: 0.50 LB
Length of Pull: 10.70″ to 13.95″

About the Adaptor:


The most important capability of these adapters is to facilitate the use of collapsing or telescoping stocks, which provide a shorter length of pull (LoP) than the factory stock, which is especially important for law enforcement or “tactical” operators. Ergo Adaptor is constructed of Ballistic Zytel Polymer.



Ergo Collaboration Defense Kit Telescoping BCM Gunfighter Buttstock Poly Ergo Adaptor, Tube & Castle Nut, Pistol Grip Mossberg 500 12 Gauge Shotgun

“The ultimate kit for the Home 12-Gauge Operator”


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