Originally Posted by Kwesi
I was originally going with the Sparrow until a very knowledgeable friend advised me to go with the Spectre II. He was my SOT that had both in stock. IIRC there were a few reasons:
1. The o-ring and different baffles
2. It is also rated for the 5.7x28mm which I have (Sparrow might be the same)
3. It is full auto rated for .22LR which I shoot
It is user serviceable and easy to disassemble.
While researching, I didn't find any issues with a first round pop.
It is pretty quite on the Ruger 22/45 Lite in the picture. On my Savage Mark II FV-SR rifle, it is amazingly quiet. Quieter than a pellet gun...