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!
76 Reviews Hide Reviews Show Reviews
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So much fun
Works perfectly! Could not ask for better.
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Kabuto drop-in frt/art assembled
Works great in radical firearms 300 blackout
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Kabuto Drop In
Fit perfectly in my Ruger AR556
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Drop - in frt
I haven't shot it yet. Waiting for my h3 buffer to come in but, the craftsmanship is awesome on both the frt and selector switch. 5 stars!!! Also shout outs to poorboy arms for putting me on to SS SOLUTIONS
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Trigger operation.
Amazing product. Read up on what lower it works in. As long as it’s in the proper assembly it works amazing.
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Kabuto Drop-in FRT/ART Assembled
As Easy as dropping it in a stock PSA PA-15 and pulling the trigger, poorboyarms on YouTube explains how to get it started and adds the hype. The H3 buffer is a must, the 180 degree safety is basic but does the job no problem. Thank you super safe solutions for having it listed assembled for an affordable price makes having fun easy.
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Kabuto drop in frt
Works great, customer service is amazing, it does take a little massage to get it smooth, and I had the best experience in a PSA lower. Happy shooting.
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Kabuto Drop-in FRT/ART
Works great!
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Kabuto
Worked great, as advertised. Highly recommend, this took me less than 5 min.s to install. Already had the h3 buffer. Honestly the easiest and and best priced frt on the market. Without losing any quality. Will order again soon
