Anyone using this product? I've been debating between the Tapco and Butler Creek folding stocks. Trying to stay under $100. $60 ideal. Any other recommendations? Knoxx worth the price? Any other quality folding stock. I have a 590 and would like to carry my shotgun in a duffle bag. Pistol grip ideal too. Factory stock seems too long. What's it called? Length of pull? Still want a comfortable stock though. Seems those collapsible and folders don't offer much to the shoulder.