LOP is adjustable. It's 13" from the trigger to back surface of the mounting plate with the backing plate wound all the way in. You can wind it out about 5/8" more and still have some threads left (you need a few so they won't strip out). A Jones stock adjuster (this looks like another brand, likely thicker)adds about 1/4" and your buttpad thickness goes on top of that. If this is adjusted all the way in I'm guessin' that this setup has a 14 3/8 - 5/8" LOP. Hope this helps. These guns are bargains. Wanting/needing to adjust your gun to fit you is one thing. Having all of the adjustors already mounted on the gun/stock is a godsend. Good luck.