Not really worth it - - Armaspec AR-15/AR-10 Stealth Recoil Spring

The only thing you really gain with this is a quieter cycling. It really bothers me that you have to compress them to close the upper and the lower, because in the directions, you remove the buffer retainer and spring. I fired it both ways, and they weight far more than a regular buffer and spring configuration. Personally - I like the raspy sound it makes, and I have sent back both of these items. IMHO - go with a standard buffer and spring and put the money into something else.