Chrome Silicon Buffer Spring 2 for 1, Damage Industries

[trailtundra]

http://damageindustriesllc.com/products/search?title=ENHANCED+SPRING&items_per_page=10

Make sure you notice the Carbine or Rifle lengths.

[*Zombie Killer*]

These springs aren't bad, but Sprinco (aka Tactical Springs) has a higher quality chrome silicone action spring. The specs on paper speak for themselves...

http://www.sprinco.com/tactical.html