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The Ruger Mark IV is a fantastic rimfire pistol right out of the box, but the factory trigger leaves plenty on the table for anyone chasing tighter groups or faster splits. Apex Tactical built this Competition Action Enhancement Kit to fix exactly that. It swaps in a red-anodized flat-faced trigger and a matched hammer that work together to give you a lighter, crisper pull without touching Ruger's factory sear, so the drop safety of the pistol stays intact.
When dialed in per Apex's installation video, this kit drops the trigger pull weight to roughly 3 pounds, cuts overtravel by up to about 80 percent, and reduces overall travel around 25 percent. The result is a clean, predictable break with a short, positive reset that makes it far easier to call your shots. An adjustable overtravel stop screw lets you fine-tune the feel, which is why Apex recommends this one for competition and range use rather than duty or carry setups.
The kit is built from steel and includes the Apex trigger, the Apex hammer, a safety plate that preserves factory safety values, over-travel set screws, and a red-anodized magazine safety delete. That delete plate is optional and lets the pistol fire without a magazine inserted, which is handy for match stages but purely up to you whether you run it.
This kit is made for standard Ruger Mark IV models chambered in .22 LR, including guns with the updated safety or newer post-recall builds. It is not intended for the Mark IV 22/45, which uses a different kit. The Mark IV internals are a bit more involved than some drop-in jobs, so following Apex's step-by-step video makes the process smooth. Folks who have done it consistently report a night-and-day improvement over the mushy stock feel, and it is a popular way to wake up an already excellent range gun.
No, this kit (part 117-154) is built specifically for standard Ruger Mark IV pistols chambered in .22 LR. The 22/45 models use a different fire control layout and need Apex's dedicated 22/45 kit. Double-check which frame you have before ordering so you get the right parts.
Once adjusted per Apex's install video, this kit brings the trigger pull down to around 3 pounds, which is a big drop from the typical factory pull. It also cuts overtravel by up to roughly 80 percent and shortens overall travel about 25 percent. You get a crisp break with a short, clean reset that makes the pistol much easier to shoot accurately.
Apex designed this kit to maintain the factory safety values, and it does not require modifying Ruger's factory sear, so the drop safety is not compromised. The kit includes a safety plate and has passed a six-foot drop test onto concrete. The magazine safety delete is optional and is intended for competition use if you choose to install it.
The Mark IV internals are a little more involved than some simple drop-in triggers, so it helps to take your time. Apex provides a step-by-step installation video that walks you through frame disassembly and reassembly, and most people find the process straightforward when they follow along. If you are not comfortable working on your own fire control parts, a gunsmith can knock it out quickly.
| UPC | 854263007517 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 117-154 |
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