Selective Fire T15 Full-Auto Trigger Upgrade Kit w/ Legacy Bolt 6.0 oz

Unlock Safe / Semi / Full-Auto on your mechanical First Strike T15 with the Legacy Performance Selective-Fire Upgrade. Designed by the original T15 engineer, this drop-in kit replaces the factory trigger module and adds a left/right selector for instant mode changes. The included lighter main spring reduces kick and air use, while the updated Legacy bolt geometry feeds today’s First Strike® rounds more reliably.

What’s included

• Select-Fire trigger module (Safe/Semi/Full-Auto)

• Ambidextrous selector/safety

• Legacy performance bolt (re-profiled face for FSR & roundball)

• Lighter mainspring + bumper

• Small parts for a complete install

Why it’s better

• Easy installation: true drop-in module; no repeated teardown to “chase” timing

• Adjustable ROF: tune with a 5/64" hex through the top of the module (approx. 10–15+ bps window)

• Smoother cycling: lighter spring lowers recoil and air consumption, reducing long-term wear

• Reliable feeding: revised bolt face improves interaction with modern FSR

Compatibility

• Fits all First Strike T15 markers (mechanical).

• Works with standard 800–850 psi tanks; no 950–1000 psi “workarounds” needed.

Notes & best practices

• Always chronograph and respect your field’s ROF/ramping limits.

• Lightly oil metal-to-metal contact points during routine maintenance.

• If you only want the lighter spring or the revised bolt, those components can be installed independently.