KEL TEC RDB Trigger | KEL TEC RDB Accessories | KEL TEC RDB Aftermarket Parts

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KEL-TEC RDB Trigger Spring Kit

  • Consists of a custom designed and manufactured RDB Trigger Return Spring

The KEL-TEC RDB Trigger Spring will reduce your trigger pull from a factory 4.75-5.5 lbs to a modified 2.5 lbs. Best KEL TEC RDB Trigger Available! M*CARBO now offers the KEL-TEC RDB Trigger Adjustment Solution that has been highly reviewed and acclaimed as one of the Best KEL-TEC RDB Accessories on the market!

Custom KEL TEC RDB Aftermarket Parts designed to improve your accuracy and tighten shot groups. This is the most effective was to upgrade the KEL TEC RDB Trigger! Watch any KEL TEC RDB Review and you will hear most of them complain about the heavy factory trigger. Your KEL TEC RDB Accessories should included a Reduced Trigger Pull Solution for your KEL TEC RDB Trigger!

Improve the KEL TEC RDB Accuracy by giving the Shooter a proper trigger pull. Best KEL TEC RDB Trigger Upgrade for the money and way less expensive than any other option. M*CARBO Custom KEL TEC RDB Aftermarket Parts made in America and come with a 100% Lifetime Guarantee! One of the Best KEL-TEC RDB Accessories for improving the KEL TEC RDB Accuracy and KEL-TEC RDB Trigger.

All KEL TEC RDB Custom options to improve RDB Performance and Accuracy! Best KEL TEC RDB Aftermarket Parts to Reduce Trigger Pull by 40% in less than 15 minutes! M*CARBO is your only Official KEL TEC RDB Aftermarket Parts and Accessories Supplier!

KEL-TEC RDB Owners Manual & Exploded View:

If your doing the KEL-TEC RDB Trigger Job, then you might find the following KEL-TEC RDB Resources useful in further enhancing your firearm with KEL TEC RDB Aftermarket Parts. Download the KEL-TEC RDB Owners Manual or use the Exploded View of the KEL-TEC RDB Parts Diagram to plan your next firearm project.

No Hassle 100% Lifetime Guarantee on Parts & Accessories:

The KEL-TEC RDB Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee. This means that at any time you can send it back and we will exchange it, issue a refund or assist you in any way possible. We even pay return shipping and automate the return process here!

Drop Tested and Approved:

KEL-TEC RDB Trigger Spring Kit is an M*CARBO ASTM Spec Spring that will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 9" & 12"+).

Range Tested and Approved:

The KEL-TEC RDB Trigger Spring Kit have been tested repeatedly with numerous brands of ammunition to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made KEL TEC RDB Aftermarket Parts designed and manufactured by Combat Veterans. We will donate a portion of your purchase to the Military Foundations we humbly support.


You must be 18 yrs of age to purchase. We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Modifying your weapon may be prohibited in your state. Do not modify your sear or hammer engagement surfaces, with or without the KEL TEC RDB Aftermarket Parts. Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that may be incurred.

Overall Customer Rating of 15 Reviews:


Love this spring. I was a little skeptical they're $12 spring would make any difference but I'm a True Believer. After watching their installation video to familiarize myself with the weapon components installation took about 25 minutes. Definitely a 50% reduction and trigger pull. MCARBO took one of the best Bullpup triggers I made it 10 times better. Excellent work guys.

Mountain View Arkansas

No Nonsense!

Bullpup triggers generally suck. But sometimes you have to give a little to get a little. Exception is the RDB trigger which does not SUCK to begin with. Mine cracked at 4lbs 13ozs stock. Not too any standards. Then someone, Chris, says “Nope, that still sucks”. And delivers a trigger spring that dropped my RDB pull down to 2lbs 8ozs. On a freaking bullpup! My follow up shots were already decent with my YHM Slant compensator. Now they are twice as fast with a $13 spring! Thirteen freaking dollars!

Thanks Chris for doing something that others try to lure us into thinking costs $300 with a plethora of parts. You deliver a simple solution at 5% of the cost. Charlie Mike Brother!

Massillon, Ohio

Outstanding ! Five star product !

In the world of aftermarket support, it's refreshing to utilize parts that actually work better than advertised. The M*CARBO Kel-Tec RDB Trigger Spring Kit arrived in short order, installed without issue (utilize the excellent an comprehensive instructional video) and proved a superior trigger pull experience. I can't recommend it enough and I'll absolutely look to M*CARBO for their other firearms accessories in the future.

Eddie Massaro

Owner @massaroholsterworks

Quality product

The people at mcarbo sent me the spring but the post office lost it. I called mcarbo and they sent me another one ASAP with no questions asked. Received the spring and installed it in about 35 minutes with their YouTube instructions. It was easy. I used it in a run and gun event the very next day and it worked great! Thanks


Must Have Upgrade for RDB

I was skeptical that the RDB trigger could be improved so much just by replacing the spring, however watching the installation video before purchasing had me very interested. After seeing the price, I was sold! This spring upgrade blew me away! You guys really need to create more parts. Maybe a new trigger, foregrip, and magazine release!? Keep up the great work!