The MasterPiece Arms BAMOUNT301125 MPA BA Bolt Action Mount in Black is a precision mounting solution designed to attach high performance optics to bolt action rifles with Picatinny rail scope bases. Crafted from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize, this mount features horizontal split rings and a robust interface that delivers positive engagement across both in-spec and out-of-spec rail systems, ensuring reliable zero retention with every shot. It offers four mounting locationsleft and right sides in both front and backaligned to 20mm hole spacing to complement a wide range of Unimount accessories, while delivering exceptional bore size consistency within 0.0002 inches and bore roundness/cylindricity within the same tight tolerance. Designed to confidently move optics between multiple rifles, the BAMOUNT301125 provides a superior clamping surface for maximum rail engagement and includes multiple locking lugs on the bottom rail interface to guarantee Absolute Return to Zero. With a compact length of 4.760 inches and a weight of 6.8 ounces, this mount supports large objective scopes up to 56mm (34mm tube) or 50mm (30mm tube), and the MPA BA 1.125 inch height erects the housing to main tube measurement of 0.210 inch or shorter, offering a clean, drop-in fit for accurate field performance.