Stock buffer springs are notorious for short life, and the resultant functioning problems. This Chrome Silicon Spring lasts 500,000 cycles. Correct timing and resistance on the recoil stroke and a controlled rebound ensures reliable feeding with consistent forward thrust -- the rifle functions flawlessly and stays on target better. Delays unlocking for fewer pressure symptoms. You can feel, and see, the difference!
The Tubb Buffer Spring is now only available in the flat springs. It will work for any AR-15 and Carbine rifles.