Each Weaver base is machined to the tightest tolerances for a custom fit. They are 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. 1 3/4"
Einfield (Cut like Winchester 70)
H & R Models 300, 301, 330, & 370 before 1973; 300, 301 LA Post 1973 (270, 30-06, 7mm, 300 Winchester)
Marlin Models 455 & MR7
Mauser Model 98FN, Swedish 96, & Bauer 3000 & 4000
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