Weaver Top-Mount Base #16 glossy black for Marlin 39A and others.

Weaver Top-Mount Base #16 glossy black for Marlin 39A and others.
Each Weaver base is machined for a custom fit with the tightest tolerances. They are designed to counteract the effects of recoil with a square notch that precisely fits the stable cross pin in each removable Weaver ring. Fits:

Anschütz Mark 12 (Front & Rear)
H&R Models 250, 251, 264, 265, 365, 450, 550 (Front)
Marlin Models 39A round bbl. & 1897 Cowboy (Front)
Winchester Models 75 Sporter, 75 Target, & 77 (Rear)
Mossberg Models 35, 40 (Rear), 43, 44, 46BT, 144, and early models (45, 46, 46A, 46B, W/13/16" Barrels)(Front)
Remington 514 (Rear)
Savage Models 3 (Rear), 19 & 23 (Front), 93F Heavy Barrel (Front & Rear)
Stevens Models 53 (Rear), 418 and 4181/2 (Front & Rear)
Savage MKII (Front & Rear)
Springfield 83 (Rear)
Winchester 75 Target (Front)

This is a 1-piece base for a 2-piece system.
Mounting material included