Just what i needed to run my 300 blk - Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine

I was having a lot of short stroke issues with my 300 BLK AR build (carbine length gas system). After some investigation I determined my AR was under gassed. One option would have been to drill out the gas port to a larger diameter but I didn't want to void my barrel warranty so I needed other options. The answer was this reduced power buffer spring which has fixed my feeding issues no matter the load I've tried. I get consistent 4 o'clock ejection with most loads and the bolt locks back just like it should.