No-Tune uppers are simple: Use a certified trigger and a heavy 9mm buffer, then go shoot.

Certified trigger systems:

ARC-FIRE (Milspec trigger version)

V2 preferred: https://activesafetydesigns.com/ar15/arc-fire-trigger-v2-ambi-kit-0-90-180/

V1 works as well.

Atrius Forced Reset Selector with Rave Trigger:

Selector: https://atrius.dev/atrius-forced-reset-selector/

Certified No-Tune triggers to pair with the Selector:

Rave 22 works perfectly with 9mm: https://borebuddy.com/product/rave-22-trigger-borebuddy-x-rise-armament/

Schmid Single Stage Milspec – a great budget trigger

Notes on other Triggers with the Atrius: Other triggers listed as compatible with the Atrius may or may not be 9mm No-Tune compatible. As we certify triggers we’ll add them to the list.

Notes on Other Forced Reset Systems:

Other triggers including super safeties, Kabuto, Atrius/ARC, Rarebreed/disruptor and clones MAY work but variations in trigger quality prevents us from certifying them as no-tune.

Buffer System:

Click here for our recommend 9.5oz buffer system

Ammo:

High quality ammo is recommended. Aluminum case should NOT be used in a direct blowback 9mm.

Recommended Magazines:

We like using the MEAN Arms ExoMags as they fit standard milspec lowers.