Sig Guy Increased Power P320 17/21 Round 9MM Magazine Spring +10%
 
 SPRING ONLY. FOLLOWER, FLOOR PLATE AND MAGAZINE BODY NOT INCLUDED 
 
Description:
Manufactured of Chrome Silicon alloy these plus power magazine springs are designed to provide more load and last longer than the factory equivalent. The advantage of Chrome Silicon in a magazine spring is its higher yield point of material, allowing for the spring to take less initial “set” and provide a greater load while being under less stress.
 
Available in the following sizes:
P320 15 round (9mm) magazine spring
P320 17/21 round (9mm) magazine spring
P320 15 round (10mm) magazine spring