drop in shotgun recoil reducers?

[xXWildPonyXx]

i was looking for a recoil reducer for my O/U and they drop in weights popped up and that guy in this on EBAY AD says that it makes his 12g O/U feel like a 20g i just never seen them before and can this be made on your own and how does it work?

Thanks

[Huggy]

It's inertia based. The fluid motion, and weight of the mercury in the tube is supposed to slow the recoil, IIRC.
It's a sealed tube with mercury inside, that fits in the butt stock.
Unless you're proficient at making sealed tube containing mercury, you might not want to give this a go.
A simpler version can be made from lead shot in a bag or cigar tube (if you can find one that fits properly). Basically weight helps reduce recoil. I used a shot bag in the hollow plastic stock of a Savage 94 and it helped a bit, but I really can't compare since I've never used one of the mercury reducers.
Here's a look at some others, and an idea of what they go for.
http://mpcsports.com/index.asp?PageA...S&Category=245
Best of luck.