Fits All Ungrooved .22's; Takes All Standard Tip-off Rings; Available In 2 Diameters
Brownells Dovetail Scope Base gives you the ability to update any of those millions of older .22 rifles to accept modern rimfire optics. Made of tough, durable, aluminum; black anodized to compliment blued firearms. Solid, rigid support. Accepts all tip-off rings designed for 3⁄8" nominal dovetailed receivers. Pre-drilled and countersunk to accept three 8-40 screws (included). Drill and tap receiver to mount. See our 12" long base stock below for all those special applications.
Big Book Catalog, Issue:68, Page:265
SPECS: Aluminum, black, anodized. 840-4 - .840" (21.3mm) dia. fits all small ring .22s with receiver dia. less than 1" (2.5cm). 100-4 - 1" dia. fits the larger receivers of 1" and 1.05" (2.7cm). Both are 4" (10.2mm) long.