What it does: 
Made from high quality stainless steel, these allow shooters to quickly change the recoil spring weight in their M&P. This allows the shooter to easily tune their gun to loads and preferred recoil impulse.
 
Details:
Fitment:
        
       Made from high quality stainless steel, these allow shooters to quickly change the recoil spring weight in their M&P. This allows the shooter to easily tune their gun to loads and preferred recoil impulse.
Details:
- Stainless Steel
 - For use with flat wire ISMI recoil springs
 - Made in the USA
 
Fitment:
M&P 4.25" and 5", select option above.