It is available in 3/8" and 11mm dovetails. Determine which dovetail you have by measuring across the top of the dovetail. If you measure 0.437" you have an 11mm dovetail. If you measure 0.5" you have a 3/8" dovetail. Picatinny cross slots run the full length of the rail, which gives the shooter flexibility when mounting scope rings and other accessories. The cross slots are also machined the full width of the mount and gauged to MIL-STD 1913 specs maintaining tolerances of +/-.002".
Machined From: Solid 7075 T6 Aircraft Grade Aluminum
Finish: Matte Black Only
Compatible with Picatinny or Weaver scope rings.
Mounting Hardware: Socket Head Torx® Screws and Wrench Provided
Overall Length of Mount: 5.575"