Weaver 1 Piece Detachable Top Mount Base #63B for Marlin/Mossberg/Western Field   #48069

Nobody makes bases to fit as many guns as Weaver. Yet each base is machined to tight tolerances for a custom fit. They're designed to fight the effects of recoil with a square cut notch that precisely mates to the sturdy cross bolt in every Weaver Detachable Ring. Custom hardened fastening screws come with every Weaver base. No.63B mount

Features:

• 1 piece aluminum detachable top mount base
• Precision built
• Square cut notch eliminates recoil
• Black

Fits:

• Marlin 9, 45, 30AS, 36, 62, 93, 336, 375 and 444
• Marlin 1893/1894/1895, Glenfield 30, Zane Grey and Camp-9 Carbine
• Marlin 922M and 989
• Mossberg 640
• Western Field 740