#pw .ckb-wrap{width:100% !important;max-width:100% !important;color:#1f1f1f !important;font-family:inherit !important;line-height:1.6 !important;} #pw .ckb-bar{background:#f4efe9 !important;border-left:4px solid #cd7f2e !important;padding:12px 16px !important;margin:0 0 20px 0 !important;font-size:14px !important;color:#1f1f1f !important;} #pw .ckb-wrap h2{font-size:22px !important;color:#1f1f1f !important;margin:28px 0 10px 0 !important;padding-bottom:6px !important;border-bottom:2px solid #cd7f2e !important;} #pw .ckb-wrap h3{font-size:17px !important;color:#1f1f1f !important;margin:18px 0 6px 0 !important;} #pw .ckb-wrap p{margin:0 0 14px 0 !important;color:#1f1f1f !important;} #pw .ckb-wrap ul{margin:0 0 16px 20px !important;padding:0 !important;} #pw .ckb-wrap li{margin:0 0 8px 0 !important;color:#1f1f1f !important;} #pw .ckb-wrap a{color:#b5651d !important;text-decoration:underline !important;} #pw .ckb-grid{display:flex !important;flex-wrap:wrap !important;gap:12px !important;margin:0 0 18px 0 !important;} #pw .ckb-card{flex:1 1 220px !important;background:#f7f5f2 !important;border:1px solid #e3ddd5 !important;border-top:3px solid #cd7f2e !important;padding:14px !important;} #pw .ckb-card strong{display:block !important;color:#1f1f1f !important;margin:0 0 4px 0 !important;} #pw .ckb-tbl{width:100% !important;border-collapse:collapse !important;margin:0 0 18px 0 !important;font-size:14px !important;} #pw .ckb-tbl td{border:1px solid #e3ddd5 !important;padding:9px 12px !important;color:#1f1f1f !important;vertical-align:top !important;} #pw .ckb-tbl td:first-child{background:#f7f5f2 !important;font-weight:bold !important;width:34% !important;} #pw .ckb-vid{position:relative !important;width:100% !important;height:0 !important;padding-bottom:56.25% !important;margin:0 0 18px 0 !important;background:#000000 !important;} #pw .ckb-vid iframe{position:absolute !important;top:0 !important;left:0 !important;width:100% !important;height:100% !important;border:0 !important;} #pw .ckb-note{background:#fff8ef !important;border:1px solid #e8c9a3 !important;padding:14px 16px !important;margin:0 0 18px 0 !important;font-size:14px !important;color:#1f1f1f !important;} CNC Machined Red Housing · Hardened S136 Internals · Threaded Pin · Made in Texas This is the CNC Kabuto FRT, and it's the cleanest machine work we have ever put on our shelves. It's made in Texas by one of the true pioneers of the Kabuto design. The housing is CNC machined from 6061 aluminum and anodized a deep red, so it won't crack at the shelf the way nylon and printed housings can. The lever, activator and pin are CNC and EDM cut from S136 steel, then hardened and blackened. Searching for the Kubota FRT? Kabuto is the correct name for the design, and this is the one we carry now. It ships with a high-grade PLA 3-position selector, the industry standard on Kabuto kits, on a housing that's a big step above standard. Want a metal selector? Upgrade to our monolithic CNC machined selector, or pick a CNC ambi selector in black, red, blue or gold. Build Your Own Custom Kabuto → What Makes This Kabuto Different Billet red housingCNC machined 6061 aluminum. Pre-trimmed to fit more lowers and uppers, with a beveled top so your upper closes down easier. Hardened S136 internalsLever, activator and pin are CNC and EDM cut, then hardened and blackened. Threaded 5.5 mm pinThreads in for an easier install and stays put. No more chasing a pin that walks out. Front lever blockerStops the lever from falling forward and getting stuck under the hammer. Specifications Type Drop-in forced reset trigger device, Kabuto pattern Housing CNC machined 6061 aluminum, anodized red Lever, activator and pin CNC and EDM cut S136 steel, hardened and blackened Pin 5.5 mm threaded Selector High-grade PLA, 3-position (metal selector upgrades available) Positions Safe · Semi · Forced Reset Platform AR-15 · AR-pattern PCC (9mm, .40 S&W, .45 ACP) with minor fitment BCG required M16-profile (full-auto cut) Buffer H2 minimum, H3 preferred Origin Made in Texas, USA Fitment: Read Before You Install The Kabuto works off the top of your lower receiver, so the distance to the safety and trigger is different on every lower. That's why no single activator length fits every rifle. The housing is pre-trimmed to fit as many lowers and uppers as possible, but tolerances vary from manufacturer to manufacturer, so some rifles will need minor shaving. Activator length check: the bottom tip of the activator presses the trigger down to reset it. If the tip is too long, it can't travel all the way down and pushes the whole assembly up, which binds the bolt.To test: push the lever all the way back into the reset position, then look at how the housing sits. If the housing lifts, the activator tip is too long. Shave the bottom tip a little at a time until the housing stays seated. Watch: Full Kabuto Install and Tuning Walkthrough Running it in a PCC The Kabuto also runs in AR-pattern pistol caliber carbines in 9mm, .40 S&W and .45 ACP. PCC lowers and bolts vary more than AR-15s do, so expect some minor fitment and adjustment: activator tuning, buffer and spring choice, and a function check before live fire. Take the time to tune it and it will run. Required hardware M16-profile (full-auto cut) BCG. A semi-cut BCG will not engage the reset. We run the MPI Nickel Boron M16-Cut BCG. Heavy buffer, H2 minimum and H3 preferred. Shop AR-15 buffers for FRTs. Full-power ammo. Underpowered loads may not cycle far enough to engage the reset. Function-check on Safe, Semi and Forced Reset before live fire. What's in the Box CNC Kabuto housing (6061, red anodized) with S136 lever and activator 5.5 mm threaded pin High-grade PLA 3-position selector Frequently Asked Questions Can I get it with a metal selector? Yes. Same CNC aluminum housing and hardened S136 internals, with your choice of a monolithic CNC selector or a CNC ambi selector in black, red, blue or gold. Build your own custom Kabuto. Is the Kabuto FRT good? The Kabuto is one of the most popular drop-in FRT designs because it's simple and affordable. The weak point on most kits has been the housing. This one is machined from solid aluminum, so the part that used to crack is now the strongest part of the kit. Will it fit my lower without any work? Often, but not always. If the housing lifts when the lever is in the reset position, shave the bottom tip of the activator a little at a time. The walkthrough video above shows the process. Does it work in PCC builds? Yes, in AR-pattern PCCs in 9mm, .40 S&W and .45 ACP. PCC lowers and bolts vary more than AR-15s do, so plan on some minor fitment and adjustment, mainly activator tuning and buffer setup, before it runs right. Does it need a full-auto cut BCG? Yes. The Kabuto needs an M16-profile (full-auto cut) BCG to engage the reset. A semi-cut BCG will not work. Is the Kabuto FRT legal? Forced reset triggers fire one round per trigger pull, but some states restrict them. Check our state-by-state FRT legality guide before you order. It's your responsibility to know and follow your local laws. Keep Exploring Build your own custom Kabuto with a metal selector Best FRT triggers for AR-15: 2026 buyer's guide How forced reset triggers work Are FRT triggers legal? State-by-state guide AR-15 buffers for FRTs
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