Does Not Require the Spring.
This is the style that uses the larger hole in the right side of the frame (D Style).
On the right side it looks like a D This is NOT the CZ 75B SA OLD Style Safety.
Can be fitted to SP01 Shadow.
NoticeDue to variations in manufacturing tolerances in base firearms some replacement / custom / drop in parts may require fittingWe ALWAYS suggest the use of a competent gunsmith