Part# 78971 Wolff GunSprings for S&W M&P SHIELD .40S&W 6 & 7 Rnd +5% XP MAGAZINE SPRING
Pack of 1
Magazine Springs
Extra Power magazine springs are now available for the Shield series pistols. These springs are +5% extra power and improved feeding in magazines with weakened or damaged springs.
*Not for use in Shield Plus or Shield EZ series of pistols. Please see those specific listings