Every ar should come with this - JP Enterprises Gen 2 Silent Captured Buffer Spring System

Although it may not be important, I personally don't like hearing the AR "SPROING". The JPSC not only gets rid of that noise, it makes for a better recoil impulse and simply feels great. There's also an easy way to install this without removing the buffer tube and castle nut. Cut a small thin piece of aluminum that fits under the JPSC about 2" long. Keep that piece of aluminum between the JPSC and the detent, otherwise the detent will end up in between the weights (Which will be a pain in the >>) Slowly slide the JPSC while keeping the aluminum in place. I've done this a dozen times and takes about 60 seconds to install.