I had one of the Pocket Predator plates and shot a few arrows through my Daisy F-16. I'm not really into archery or pulling bands strong enough to shoot arrows so I gave the plate away. I didn't have a release, just pinched the nock in the pouch.
The plate worked fine and will fit different width frames. It's an inexpensive way to turn an inexpensive frame into a decent slingbow. I think the yellow tubes that come on Daisys might be strong enough to power an arrow,just tie in a D loop instead of the pouch.