Anyone know if cutting the stock down on a 20 gauge Ultra Light to 12 1/2" LOP would cause any issues? I know the inertia tube runs within the stock so I was unsure how short you could go and have researched to exhaustion without finding a definitive answer.

Wanting a shotgun that has a very short overall length (24" barrel) as well as super lightweight. Montefeltro Compact comes in at 43.6" overall and 5.3lbs and is already sporting the 12 1/2" LOP. But the Ultra Light comes in at 5.2lbs with a 14 3/8" LOP and 45.6" overall. So if I could take 2" off the LOP (12 1/2" is what I prefer already) the gun would match the Monty overall length and I assume would be even lighter on the scales.

Any help would be appreciated.

Maybe take off the recoil pad and measure how far that spring tube is recessed from the butt. I would think that would answer your question.