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!
107 Reviews Hide Reviews Show Reviews
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its what is said to be love it
he is on point with this keep up the good work
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KABUTO DROP-IN FRT/ART ASSEMBLED
I highly recommend this product if you have a bear creek, palmetto state , American tactical it would be it fit in my custom ar-10 but idk if they are made for that but my 2 ar’s I put the h3 weight runs like melted butter on toast love it
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Worked like a charm
What can I say. Works as advertised. Great quality ? ? ? ? ✨️ watch the videos before you install. Save yourself from wasting energy complaining. Follow instructions you'll be fine.
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FRT for AR15
Worked great on a PSA lower, drops right in and runs great. 600 rounds no issues. Would require some fitting for my Rock River, Windham and Colt.
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Frt
A little disappointed didn’t know it was plastic. Haven’t tried it yet .
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Love it
Easy to install, definitely need a H3 buffer for optimal performance!!!! I highly recommend the kabuto. Can't beat the price and fast shipping
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Kabuto drop-in
Absolutely a great product. Functions great in every rifle I have tried it in. A true drop in & go device. Have fun then take it out on the spot. You will not be disappointed.
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Fun time
The product worked great dry cycled it several times before going to the range. Ran three full mags of mixed stuff now problem. The only suggestion I have is pick up the metal safety. Nothing wrong with the 3d printed one, it worked great, I just like metal better. That will be my next purchase. Thanks for putting this out there.
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kabuto frt
I believe there are pron and cons with anything you purchase but i myself believe this is the best frt out there there are no cons and i absolutely love it ive even sent my friends the link to get one best thing i purchased for my firearm
