I purchased this new a year or so ago and never opened it. No longer need. See photos of sealed box. Last two photos are from American Defense Manufacturing's website with additional details. Face-to-face in Albany Co. area. Also willing to ship at buyer's expense. $75
Here is a description from the American Defense website:
"The AD-B2 modular base is the medium base in our modular lineup. It is designed to accept several different risers to accommodate a variety of optics. Standalone, it is ideal for the 1.5-3x Power Mini ACOG Scopes, such as the TA33 and TA44. This mount will also fit the Nvision Halo LR thermal scope, Sightmark Wraith Mini, and Primary Arms GLX 2x, SLX 1x/3x Prism Scopes. The overall length of the base is 2.1". It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems."
Here is a description from the American Defense website:
"The AD-B2 modular base is the medium base in our modular lineup. It is designed to accept several different risers to accommodate a variety of optics. Standalone, it is ideal for the 1.5-3x Power Mini ACOG Scopes, such as the TA33 and TA44. This mount will also fit the Nvision Halo LR thermal scope, Sightmark Wraith Mini, and Primary Arms GLX 2x, SLX 1x/3x Prism Scopes. The overall length of the base is 2.1". It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems."