CTM Tactical Recoil and Hammer Spring, TM Hi-Capa

The CTM Tactical Recoil / Hammer Spring is a set of one recoil spring and one hammer spring for the Tokyo Marui Hi-Capa 4.3 and 5.1. The springs are made to Tokyo Marui's OEM specifications with the same spring force and function as the originals, so the set is a direct replacement when the old springs are tired, have set or have gone missing during disassembly.

The recoil and hammer springs are two of the hardest-working parts in a Hi-Capa. The recoil spring returns the slide after each shot, and the hammer spring determines how hard the hammer strikes the magazine's release valve. When they lose tension, it typically shows as a slide that doesn't return fully, or as inconsistent gas release from shot to shot. Because the set matches factory specification, it doesn't change the pistol's balance between gas, recoil and velocity – it simply restores the starting point.

Why an OEM-spec spring set makes sense

What you get with the set:

• Same spring force as the original: Built to Tokyo Marui OEM specifications. Unlike 120–150% upgrade springs, no other parts need adjusting for the pistol to run reliably.
• Recoil and hammer spring together: The two springs typically wear at the same rate, so you replace both in one go instead of troubleshooting one after the other.
• Quality spring steel: Made from spring steel that holds its shape over many cycles – where cheap no-name springs often set after a short time.
• For Hi-Capa 4.3 and 5.1: The manufacturer states compatibility with the Tokyo Marui Hi-Capa 4.3 / 5.1. For Hi-Capa clones from other brands, check the fit, as dimensions can vary.
• Ideal as a spare: Takes up no space in the toolbox, so a lost or broken spring doesn't put the pistol out of action before the next game day.

Maintenance and safety

• De-gas and remove the magazine before disassembling the pistol. The hammer spring is under tension, so use a suitable punch for the pins and work over a tray.
• Replace the recoil and hammer springs at the same time, so they have the same wear and the pistol behaves consistently.
• Wipe off old grease and lightly lubricate with silicone oil on reassembly – avoid petroleum-based products, which can damage seals.
• If you are unsure about reassembling the hammer group, our workshop in Aulum, Denmark can fit the springs for you.