AIP 140% Enhanced Recoil/Hammer Spring For Hi-Capa 5.1/4.3
Stiffer springs are a must to increase cycle speeds and gas efficiency.
As well as the above they also reduce recoil which makes for easier follow up shots.
The supplied hammer spring is perfect if your capa feels sluggish when cycling due to light striking. Add short stroke buffers for even greater cycle speeds!!
*Best used with metal slide