For PUMP Shotguns! I installed this on my Maverick 88 (same for Mossberg 500), but they have it for the Remington 570 as well.
Check it out at amazon: [ Ссылка ]
I finally got a chance to test it side by side with a standard stock. I fired a shot with the maverick with recoil stock and then my friend quickly passed me a mossy 500 with a standard stock and I fired that right away. HONESTLY, I didn't feel a difference except for the thickness of the rubber pad in the back. This system has no damping mechanism. It's just 2 springs and some friction from the plastic rubbing. If anything, I felt a slight delay and then my shoulder being pushed back with the same force as a regular stock... kind of like a double push. There's got to be a better system out there, but probably more expensive!
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