Weaver-type base not Compatible with Browning rings.
Action length: short action.
Imported from USA.
Attaches in place of the stock top strap on most Buck mark
pistols. Comes with hardware. Features: - machined from Aircraft
grade alloy - Weaver-Type base, not compatible with Browning
rings. Specifications: - action length: short action - pockets:
matte - mount pieces: two - weight: 1.60 oz
Browning 12521 X-Bolt 20 MOA Picatinny Rail, Short Action, Matte