Brownells 75th Anniversary - A Shooting Heritage

For M4-Style Buttstocks; Gives 6-Position Adjustment

Machined aluminum receiver extension tubes accept an M4-style adjustable carbine buttstock. Six precision-machined notches on the underside provide plenty of options for setting length-of-pull. Perfect for a custom build, installing a mil-spec or commercial stock on a civilian carbine, or updating a fixed-stock rifle with an adjustable M4 stock. Machined from a lightweight aluminum extrusion then hardcoat anodized, and dry film lube-coated inside for smooth movement of the buffer and buffer spring. Requires carbine recoil spring and buffer, lock ring, and receiver plate, all available separately.

AR-15, Issue:06, Page:031
AR-15, Issue:07, Page:036
AR-15, Issue:08, Page:034
AR-15, Issue:09, Page:038
AR-15, Issue:10, Page:042
AR-15, Issue:11, Page:047
Big Book Catalog, Issue:63, Page:031
Big Book Catalog, Issue:64, Page:036
Big Book Catalog, Issue:65, Page:034
Big Book Catalog, Issue:66, Page:038
Big Book Catalog, Issue:67, Page:042
Big Book Catalog, Issue:68, Page:046
Big Book Catalog, Issue:69, Page:046
Big Book Catalog, Issue:70, Page:048
Big Book Catalog, Issue:71, Page:051
Big Book Catalog, Issue:72, Page:055
Big Book Catalog, Issue:73, Page:061
Big Book Catalog, Issue:73, Page:390

SPECS: Aluminum, hardcoat anodized, matte black. 7-7⁄8" (20cm) long. Mil-spec – 7-3/16” (18.25cm) long, 1.145" O.D.  Commercial – 7-7⁄8" (20cm) long,  1.167 O.D.

narrow your choices »
Show Filters
2 Item(s)

Alert Me When Available

This item is currently unavailable for backorder.

Style: Carbine, Mil-Spec

Online Only
In Stock

Style: Commercial