Need help identifying application for armor glass vision blocks

[Buck Wampum]

Hi all- over in the V-100 forum, we were debating the origin of some vision blocks I bought off eBay a few years back. They are definitely not V-100 blocks, but may be for an APC or some other armored vehicle. Can you armor glass experts please take a look at the thread and let me know your thoughts? I plan to sell the blocks, but obviously want to identify them correctly before trying to list them. Thanks in advance for any help you can provide. Thread is here:

Need Source for Vision Blocks for Dragoon AFV

We are refurbishing a 1980s Dragoon Armored Fighting Vehicle. Many of its bison blocks/ballistic windows are delaminated. We pulled one and it has the following markings: VBI FSCM 9S670 P/N 100617 Photos attached. We have been told that we might need to layer glass in a tapered fashion...

www.steelsoldiers.com

 

[Buck Wampum]

Ok, found the NSN for the blocks, 2990-01-276-9530, listed for sale here:

PA - Armored vehicle bulletproof vision blocks for sale, NSN 2990-01-276-9530, P/N 112467

For sale are five (5) vision blocks. Source was from a Cadillac Gage V-150, but they may fit other vehicles using a 12" long block that is 2" thick. I'd describe them as fair-to-good condition. Not clouded to a great degree but they do have some visible patterning due to early delamination in...

www.steelsoldiers.com