This particular mount is not manufactured in the USA but would be an excellent choice for an AR10 chambered in 7.62 NATO. If looking for another option for a mount that is similar to this one, but manufactured in the USA, the Vortex Precision Cantilever mount would also fit your needs perfectly: https://www.opticsplanet.com/vortex-precision-qr-extended-cantilever-mount.html
1- The spacing between the rings is 2.52 inches.
2- The distance from the front end of the mount to the back of the front ring is 5.26 inches.
You can if you have a picatinny rail on the M1A, however as this is an AR height mount it will most likely be much higher than necessary.
This will not, as your Arken has a 34mm main-tube.
This would allow for proper clearance on just about any firearm out there!
This would work wonderfully on your rig!
This mount will not, no. The A2 front sight is visible with almost any cantilever mount when viewed at 3x or less.
This would not be an ideal solution for the Henry, however, our medium-height Pro-Series 30mm rings would be a great fit! You're looking for PN# PR30-M!
The Vortex Sport Cantilever 30mm Rifle Scope Ring Mount top portion is true to the top of the receiver but I recommend contacting Vortex in regard to if there is enough space to use the Arisaka Defense Small Optic Levelers OL-Small.
No. The Vortex Sport Cantilever 30mm Rifle Scope Ring Mount will fit picatinny flattop rails, like those found on AR pattern rifles.