Assembled Kabuto Drop-In (Edited Version)
Kit includes
• 3D Printed Carbon Fiber Nylon Three Position Selector
• Assembled Steel Internal Activator and Lever with a 3D Printed Carbon Fiber Nylon Housing
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.
Installation & Fitment Notes
On the assembled version, there are 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, allowing the parts to better mate with 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 media before 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 assembly time. Also, please double-check your shipping information before checkout!
144 Reviews Hide Reviews Show Reviews
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Have not used, but looks identical to the ones on youtube.
Bought them for my emergency storage cache.
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Super safety
Will be doing a review online soon to promote if you have anything you want to send me to review I will also do so thx yall so much
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Drop in frt
Works very well was skeptical when it took longer to break in before firing. But after that it was awesome. Definitely needs a h3 buffer have recommended it to a few already
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Drop in FRT
Works flawlessly. 2nd one I've bought. Couple it with a Tromix H3 buffer and you won't be sorry
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Best place to shop
Best place to buy from had a small shipping problem and the fixed it asap and even made it right with faster shipping and extra gift customer service is great helped me out and soo nice hard plscrdb
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Kabuto frt drop in
The best is basically a plug & play and is runs smooth definitely worth the purchase for some AR Bottoms you may have to sand down the the little ribbet that comes with the assembly so it can drop in perfectly without having to use little force but other then that great product hopefully to be sponsored and get to Try new products soon
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FRT/ART Assembley
Installed one the weekend along with an H3 buffer, followed all instructions and when fired in semi there were no problems when I tried in the third position It only would fire one or two rounds. Will have to disassemble and loook at the areas needed to polish, hopefully this will work.
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Kabuto Drop-in FRT/ART
Super easy to install...their videos were great fo conformation that you're doing everything correctly
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Kabuto drop in
Took a good bit of filing to run in my Psa ar15 but now works perfectly with h3 buffer, now just waiting on my metal 3 position selector to replace the printed one!
