this two piece hardened alloy picatinny / weaver scope ring rail kit fits; Remington long and short action 700,78,721,722,725, Howa 1500, Weatherby Mark V, Vanguard, Sauer, Bergara, Black Powder ML & MLS. Two colour options 1) Black 2) Silver + I have 222 Loctite listed and its recommended to use on the screws.