I have a stock 20" Mossberg 590 bead (I took heat shield off and dabbled with an Aimpoint Micro). I feel the standard stock is too long. I think it's called length of pull. Is there such thing as a stubby shotgun stock. Are the adjustable shotgun stocks my best option? Looking for something in the $80 range. I've seen pics of the Knoxx, Mesa, etc and it looks fairly long still. My other concern is the pistol grip, I'm a lefty, so I need something I can still work the slide release, but the safety isn't a concern (I'll work it out up top). I also looked at folding stocks, but they don't seem to be lefty friendly either, and they seem kinda cheap looking.