STI 1911 HiCap Recoil Master Heavy 5" Recoil Spring

• 5 Pack Heavy or Light Springs

STI Recoil Master. Reduces Recoil - Plain and Simple. The recoil master is designed for one purpose - to reduce felt recoil. It decelerates the slide before full stroke with a secondary spring. This allows a softer felt recoil helping you to shoot faster follow-up shots. The light system is designed for 9 mm and open pistols. The heavy system works well with 40 S W and 45 ACP. Fits 1911, Kimber, STI, SV, and Para. Must be able to remove the guide rod from the rear of the slide. Replacement Spring, Heavy or Light