Putting the semi-auto of the gk1 aside, (I understand that's a major difference of the 3). I'm looking for compactness and stopping power for a small game hunter. (squirelling while out with the dog, backpacking, etc.) Overall size/dimensions vs fpe, ease of use/maintenance, durability is also a big concern. Quality of materials, etc.... So, the smallest most reliable with the highest fpe. Which would you choose?
AP16 on top, Tequila Gun bottom. The Tequila Guns sight has been moved to behind the magazine, and the standard grip has been reinstalled since this pictures was taken. Both guns have Holosun sights. The AP16 is an HE507C, ACSS Vulcan The Tequila Gun is also now an HE507C, ACSS Vulcan
I bought that adapter for my AP16 as well. It fit perfectly, was machined nicely and the anodizing looks good, but that long tang across the front interferes with access to the cocking lever. I removed it with a saw and and filed it smooth. Some Birchwood Casey's Aluminum Black or even paint would change the raw aluminum, but I left it as a close match to the gun's finish.
The guy I bought it from changed out the crap stock folder and modified a FX Dreamline one to fit along with a proper mil spec buffer and Magpul SL-K butt, also fitted my Holosun to a neat little riser I found on eBay to give it a workable height when shouldered