Ruger MKIV V-Lock Retainer- An improved bolt stop pin retainer keeps the Ruger MKIV Bolt Stop Pin from drifting or walking out on its own. If you are having issues with the Bolt Stop Cross Pin walking out of your MK IV frame during heavy use, this new...

Ruger MK I, II, III & IV Fiber Optic Adjustable Rear Sight Improve the performance of your Ruger MK I, II, III and IV with the new adjustable rear sight. Our bright and fully adjustable rear sight will enhance your confidence and shooting experience...

Volquartsen MKIV 22/45 Mag Release plus 5 Magazine Base Pads- The ultimate competitors edge! Our new Extended Magazine Release for the MKIV and a 5-Pack of MKIV 22/45 Magazine Base Pads. The new Mag Release allows magazines to sit a little higher for...

Volquartsen Magazine Base Pad fits Ruger MKIV 22/45- Our new Magazine Base Pads for the MK IV 22/45 make magazine insertion and removal quicker and easier-for lightning fast reloads. CNC-machined from billet aluminum, these base pads will make those days...

Volquartsen Magazine Base Pad fits Ruger MKIV 22/45- Our new Magazine Base Pads for the MK IV 22/45 make magazine insertion and removal quicker and easier-for lightning fast reloads. CNC-machined from billet aluminum, these base pads will make those days...

Hogue 79128 Piranha G-Mascus Grip Fits Ruger Mark IV 22/45, Green Lava- Exotic green lava colored G10 grip panel material looks like "Damascus" color patterns and is machined to Piranha style gripping surface. G10 grip panels are...

Hogue OverMolded Rubber Grip w/ Finger Grooves – Fits Ruger MK IV 22/45 Performance meets comfort in this wrap-around rubber grip designed specifically for Ruger 22/45 Mark IV pistols. Featuring Hogue’s proprietary OverMolded® rubber, it...

Volquartsen Competition Bolt for Ruger Mk II, III, and IVEliminate stovepipes, failures to fire and improve the overall performance of your Ruger Mark II, III*, IV or Mark IV 22/45 pistol with this Competition Bolt! (* MKIII must remove chamber indicator...

Volquartsen Ruger MK IV® Accurizing Kit - Stnls TriggerThis complete drop-in kit comes with our CNC Machined Disconnector/Trigger Bar, Target Hammer, Hammer Bushing, Target Sear, Target Trigger with plunger and spring. It also comes with pretravel...

Maximus Plus1 Followers for Ruger® MK Series Magazines (2-PACK)- Replacement magazine followers that increase magazine capacity from 10 rounds to 11 rounds. The TANDEMKROSS “Maximus” Plus1 Follower for the Ruger® MK series is a drop-in upgrade...

Ruger MKIV 22/45 HIVE Grip- An aggressively textured, bee hive patterned, wrap around MKIV 22/45 grip with ergonomic finger grooves and vibration dampening rubber material. This is a one-piece grip that slips on and secures with the original 4 grip...

Ruger MKIV 22/45 Race Gun Kit Black- All of the most popular MKIV 22/45 Pistol accessories from Tandemkross, favorites in speed shooting sports like the "Rimfire Challenge" and "Steel Challenge". Here's what you get:1 "Halo" Charging Ring1 "Victory"...

Blast Shield Mag Disconnect Replacementfor Ruger Mark IV and Mark IV 22/45 Pistols.- This little replacement part shields the sear and hammer from debris, improves magazine alignment, and allows your MKIV to fire whether or not the magazine is inserted...

Cornerstone Safety and Thumb Ledge for Ruger Mark IV 22/45 Red- 1911 Style Thumb Safety for Ruger Mark IV 22/45. Replaces factory thumb safety without modifying the internals, and improves hand placement for better grip and control. - This oversized,...

Cornerstone Safety and Thumb Ledge for Ruger Mark IV 22/45 Black- 1911 Style Thumb Safety for Ruger Mark IV 22/45. Replaces factory thumb safety without modifying the internals, and improves hand placement for better grip and control. - This oversized,...

Volquartsen Ruger MK IV® Accurizing Kit This complete drop-in kit comes with our CNC Machined Disconnector/Trigger Bar, Target Hammer, Hammer Bushing, Target Sear, Black Target Trigger with plunger and spring. It also comes with pretravel and...

Halo Charging Ring for Ruger® Mk III/Mk IV® & 22/45   The Halo is an easy to grip "pull ring" that attaches to your Ruger Mk III/Mk IV bolt. It makes it easy to pull the bolt back for anyone... Big or small, strong or weak...

Volquartsen Accessory Rail for LLV Barrels  Under barrel Picatinny accessory rail fits both Picatinny and Weaver style accessories. Mounts with two 8-32 screws under LLV barrels. Newer Volquartsen LLVs are pre-drilled and tapped. We can...

Tandemkross "Victory" Trigger, BlackReplacement for Ruger Mk III and Mk IV 22/45Features at a Glance:Flat faced for better control and feel100% Adjustable for pretravel and overtravelLightweight skeletonized designFits MKIII or MKIV, Original or...

CNC-Machined Disconnector for MK IV This MKIV Disconnector is CNC-Machined from 416 stainless steel (the factory disconnector is a sheet metal stamping). The machining process allows several design changes to the the way the disconnector functions. We...