I bought this for a home defense 300 Blackout build that I did, and have since upgraded to a different 300 blackout. It barely saw 500 rounds while on the build. Has mostly lived next to the bed. This is one of the best stock/buffer setups out there if you're going for small and quiet. It extends fairly far, and is very compact when retracted. The JP silent capture minimizes extra sound usually made by the buffer spring and makes the recoil very soft. Paid over 500 for this just a couple years back. Also added a Wise Guys Co 'Split Fix' in ranger green. 

price is OBO, but lowballs will be ignored.