Builders Kit Kabuto Drop-In (Edited Version)
Kit includes
• 3D Printed Carbon Fiber Nylon Three Position Selector
• 3D Printed Carbon Fiber Nylon Housing
• Steel Activator Part 1, 2, and 3
• Two 2mm x 8mm Dowel Pins
• 5mm x 12mm Dowel Pin
About the Builders Kit
The Builders Kit is a complete do-it-yourself package — everything you need to build your own Drop-In Kabuto is included. All components are identical to those used in the assembled version. We strongly recommend watching the step-by-step builders tutorial on our Facebook page before buying to make sure the kit is right for you.
Compatibility
This drop-in is designed only for the AR-15 platform — it will not work in a CMMG .22 or an AR-9, as those use different levers. Mil-spec triggers are the only triggers fully confirmed for compatibility at this time; your mil-spec trigger does not require modification and will work as-is once the unit is fitted correctly. Other trigger types may work but are untested.
The system has been successfully fitted to many popular AR-15 builds, including PSA, Aero Precision, Anderson, Daniel Defense, Core15, and DPMS. While these brands have been tested and do work, we cannot guarantee fitment in every rifle platform.
These require an M16 bolt carrier groups, and an H3 non-solid buffer weight to function as intended.
Assembly & Fitment Notes
The assembled unit (what you will build from the kit) contains two prongs on the drop-in that push both sides of the trigger to cause it to reset. If the part won’t fully seat during installation, the smaller prong on the right is usually contacting the disconnector. Gently bend that leg outward a small amount with pliers so it clears the disconnector and the rifle will close. This feature is intentional — the design prevents the unit from being modified or functioning like a DIAS.
Break-in & Finish
These are raw parts. Normally, cycling and dry-firing the unit 10–20 times in both modes helps wear off any rough edges so the parts better mate to your rifle’s tolerances. If you prefer not to cycle/dry-fire, the bottom of the lever may require light polishing. Each lever is tumbled in a deburring/polishing medium prior to shipping.
Buffer Requirement
A heavier buffer weight (H2–H3) is required — do not use a solid buffer.
Safety / Use
Remember: this is an FRT. Do not hold the trigger down like a full-auto — doing so will cause premature wear and may ruin the drop-in.
Shipping & Checkout
Please allow 1-3 days for shipping. Also, please double-check your shipping information before checkout!
47 Reviews Hide Reviews Show Reviews
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FRT
Works like a charm. stuff it ATF :)
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Frt
Works beautiful
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Great frt
Takes a little fitting putting it together but its great
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KABUTO Drop-In Bulder Kit
I purchased this builder kit as I wanted a drop in kit that can be used in multiple rifles. I had a small fitment issue with the activator. I contacted the company and a replacement part was quickly sent out and I now have everything working perfectly. This kit has been tested in 2 separate rifles without issue. I am pleased with my purchase and will be purchasing the metal housing soon. In addition to a plastic house, the kit comes with a plastic safety selector. Although this selector probably would have worked fine, I used this selector as a template to modify my milspec selector and am now more confident in this kit. I would definately purchase from Super Safe Solutions again and am looking forward to any new products they may release.
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Drop-in FTR kit
Zero regrets getting this kit. Remember.....it's a kit so you need to do a lil' deburing, polishing and prep prior to assembling it if you want a quality outcome. Ya' saved money getting the DIY kit so take your time and clean up the parts for a really nice FRT system.
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Great product! Easy to build, works flawlessly best FRT on the market ?
Best FRT on the market for the price can’t beat it and it’s selectable from semi safe to super safe ?
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Kabuto Drop-In FRT
Purchased this for my PSA ar15. No modifications needed. Affordable DIY approach gave me control over assembly. Watched the supersafeco assembly video on facebook and had no issues. WIth my PSA AR15 i am running unsupressed and am running an H1 buffer, the H3 buffer was too much and gave light primer strikes.
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builder kit
Very easy to build. Works great.
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Builders kit
Easily assembled. Able to smooth all metal surfaces more efficiently before assembly. Will definitely purchase more.
