Springer Precision Extra Power Magazine Springs
 
Magazine Spring of the highest quality for your 140mm (11 coil) magazines/basepad extensions. This extra power magazine spring is a must for ensuring reliable feeding with extended base pads. Always keep your mags fresh with good springs.
 
Magazine Spring of the highest quality for your 170mm (13 coil) magazines/basepad extensions. This extra power magazine spring is a must for ensuring reliable feeding with extended base pads. Always keep your mags fresh with good springs.