MAGAZINE SPRINGS - 17/17L, 20, 22, 31, 34, 35

5% extra power spring.

For use In
Glock 17, 17L & 34 - 17 or 19 rounds.
Glock 20 - 15 rounds.
Glock 22 and 35 - 15 rounds
Glock 31 - 15 rounds (Law Enforcement)
*With +2 Extension