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Airsoft GBBR Trigger Boxes & Fire Control

The fire control group in a gas blowback rifle includes the hammer, sears, trigger bar and springs that release each shot. On full-auto GBBRs these parts take heavy wear, and upgrading them to steel is one of the best ways to keep your rifle reliable.

Choose steel hammers, stainless sears, trigger bars and spring sets for the Tokyo Marui MP7 GBB from Pro-Arms, plus MWS trigger box parts from Jaeger Precision.
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Frequently Asked Questions

Need To know more?

Why upgrade my GBBR fire control parts?

Stock parts can wear quickly on full auto. Stainless steel parts are much more durable and reliable.

What does a stronger hammer spring do?

It gives a firmer strike on the valve, helping gas efficiency and consistent cycling.

Will these fit my rifle?

Most parts here are made for the Tokyo Marui MP7 GBB or MWS. Check each listing.

Can you fit them for me?

Yes. Our tech team can fit fire control parts. Get in touch.

Tokyo Marui MP7 GBB Upgrades

The TM MP7 GBB is a popular compact SMG, and Pro-Arms makes a full set of steel upgrades for its fire control group. These include the steel hammer, stainless trigger sear, stainless semi sear, stainless trigger bar and sear, 140% hammer spring and the full replacement spring set.

Tokyo Marui MWS

MWS owners can fit the Jaeger Precision trigger box screw V2, which keeps the trigger box secure. See more MWS parts.

Why Upgrade to Steel?

Stock fire control parts are often softer metal and can wear quickly on full auto, causing runaway fire or a gun that won't reset. Stainless steel parts are much more durable, and a stronger hammer spring gives a firmer valve strike for better gas efficiency.

Fitting fire control parts needs care. Our tech team can help: get in touch. See also GBBR nozzles.
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