VOLQUARTSEN | RUGER MARK IV TRIGGER UPGRADES
Volquartsen Internals. Your Choice of Trigger.
The Volquartsen MK IV Accurizing Kit, No Trigger delivers Volquartsen's precision fire-control internals—target hammer, target sear, hammer bushing and CNC-machined disconnector—without a trigger shoe. It fits every Ruger MK IV, including the 22/45 and 22/45 Lite. Made in USA for shooters who already have the trigger they want.
Some MK IV owners have already settled on a trigger, whether it's a favorite aftermarket shoe or one already fitted to the pistol. Buying a second trigger just to get the rest of the upgrade makes little sense. Volquartsen's No Trigger Accurizing Kit solves that by supplying the matched hammer, sear, bushing and disconnector that do the real work behind the trigger, so the pistol gains Volquartsen's internals without duplicating the part you've already chosen.
Precision Internals, Ready to Install.
Inside the kit you'll find the CNC-machined disconnector, target hammer, hammer bushing and target sear, plus Allen wrenches for installation. The kit is designed for factory Ruger MK IV frames; Volquartsen does not guarantee compatibility with aftermarket frames. Installing the kit eliminates the factory magazine disconnect.
Prefer to have the trigger included? Volquartsen's complete Accurizing Kits pair these same internals with a trigger: the Black Target Trigger kit, Stainless Target Trigger kit and Gold Target Trigger kit are designed for a 2.25 lb pull, while the Black 19.22 Flat Trigger kit and Gold 19.22 Flat Trigger kit are promoted at 1.75 lb with a 90-degree break.
Pair It with a Volquartsen Competition Bolt.
A refined fire-control system is only half the equation—the bolt does the rest of the work. The Volquartsen Black DLC Competition Bolt and Volquartsen Gold Competition Bolt are CNC-machined, ground and case hardened, drop into the MK IV, and arrive with an Exact Edge Extractor, SureStrike Firing Pin, recoil rod and three recoil springs for tuning to your ammunition. If you'd rather keep your factory bolt, the Bolt Tune-Up Kit adds the extractor and firing pin on their own.
Build Out Your MK IV.
Want the trigger and bolt upgrades in one box? Step up to a complete Competition Kit such as the MK IV Competition Kit with Gold Target Trigger or the MK IV Competition Kit with Gold 19.22 Flat Trigger. On 22/45 models, finish the controls with the Volquartsen Extended Bolt Release. Ruger owners also look at names like Tactical Solutions and TANDEMKROSS; for fire-control internals, Volquartsen remains one of rimfire's most established choices. Browse everything in our Ruger Mark IV Parts & Upgrades Collection.
Pete's Pillars is an authorized Volquartsen dealer. We carry genuine Volquartsen upgrades for shooters who want their rimfire to feel as good at the firing line as it looks on the bench.
Product Specifications
Manufacturer: Volquartsen Firearms
Product: Accurizing Kit for Ruger MK IV, No Trigger
MPN: VC4AK-NT
Compatible Pistols: Ruger MK IV, MK IV 22/45 and MK IV 22/45 Lite (factory frames)
Trigger: Not Included
Included: CNC-Machined Disconnector, Target Hammer, Hammer Bushing, Target Sear, Allen Wrenches
Magazine Disconnect: Eliminated by Installation
Manufactured: Made in USA
Frequently Asked Questions
What's included, trigger options, MK IV compatibility, and ordering genuine Volquartsen components.
Does this Accurizing Kit include a trigger?
No. The VC4AK-NT includes no trigger shoe. It is intended for shooters who already have the trigger they want to run.
What's included in the No Trigger kit?
A CNC-machined disconnector, target hammer, hammer bushing and target sear, plus Allen wrenches for installation.
What trigger pull will I get?
That depends on the trigger you install. Volquartsen's 2.25 lb design rating applies to its Target Trigger kits, such as the VC4AK, and its 1.75 lb rating to the 19.22 Flat Trigger kits, such as the VC4AK-0004.
Will it fit my MK IV 22/45 or 22/45 Lite?
Yes. Volquartsen designed this kit for all Ruger MK IV variations, including the 22/45 and 22/45 Lite, with factory Ruger frames. Compatibility with aftermarket frames is not guaranteed.
Does it change the magazine disconnect?
Yes. Installing the kit eliminates the factory magazine disconnect, so the pistol can fire with the magazine removed. Everyone handling the pistol should understand that change. Follow Volquartsen's installation instructions and function-check the pistol before use.
Which Competition Bolt pairs with this kit?
Is Pete's Pillars an authorized Volquartsen dealer?
Yes. Pete's Pillars is an authorized Volquartsen dealer offering genuine Volquartsen Ruger Mark IV upgrades. We stock accurizing kits, competition kits and bolt upgrades so you can build your next precision rimfire project with confidence.
Small Change. Big Impact. Pete's Pillars.
