Ruger Mark IV Trigger Improvement?

[seatrout]

Took my new Mark IV Competition to the range today for the first time. Tried 6 different ammo brands/types from both magazines and had zero failures over about 150 rounds. Really like the gun, shoots much better than me. I'd like to improve the trigger pull but don't really want to install the full accurizer kit. Thinking of the TandemKross trigger and the VQ sear or maybe just the sear. I'd have to go with the Mark II or III sear since you can't buy a IV sear alone. Anyone try this? Will the Mark II or III VQ sear work on the Mark IV?

 

[22/45 Fan]

The MkII sear will work.

 

[seatrout]

Would the mark ii sear and tandemkross trigger lower the trigger pull significantly?

 

[22/45 Fan]

They would improve the trigger pull. The sear should lighten and smooth it a bit and the TandemKross trigger will allow you to adjust the takeup and overtravel. To do it right you also need the VQ hammer and bushing which will have the further advantage of eliminating the magazine disconnect.

 

[AzShooter1]

You can now buy just the Mark IV sear from Volquartsen. Wish you could have done that a month ago when I had to buy the whole Kit.

The Tandemkross Victory Trigger is great. It dropped my trigger pull another pound and I really like the way it feels. My finder doesn't move when I'm shooting.

You can get the bushing from TK as well.

 

[Dan in MI]

A friend called yesterday and asked if I knew how to replace the hammer, sear, etc, on a MK-IV. As I have not been in one of those yet I didn't know.

So I am asking, are they different internally? Are there new tricks I need to learn?

 

[Bricktop]

A friend called yesterday and asked if I knew how to replace the hammer, sear, etc, on a MK-IV. As I have not been in one of those yet I didn't know.

So I am asking, are they different internally? Are there new tricks I need to learn?

The safety functions as the hammer pivot. The grips need to be removed, then the right side safety lever needs to be removed, the safety lever -- which serves as the hammer pivot -- can then be removed on the left side of the pistol. The safety lever also serves as the pivot for the magazine disconnect and the safety itself. The sear will then flop backwards, out of position. The sear has its own pivot pin located in the grip frame below the safety. It's fairly self-explanatory upon inspection.

 

[AzShooter1]

Volquartsen has an excellent video on how to install their kit. I watched it a few times before I did mine and it was easy. Only took me 30 minutes. Watch the video more than once and remember to uncock the hammer before trying to put the new one in.

 

[Dan in MI]

Thank you

 

[SGW Gunsmith]

The MkII sear will work.

Really? Now that's certainly interesting. Why then is the cut-out for the disco on the Mark IV VC sear a bit wider than the VC sear for the Mark I, II & III then?

 

[22/45 Fan]

The MkII sear will work.

Really? Now that's certainly interesting. Why then is the cut-out for the disco on the Mark IV VC sear a bit wider than the VC sear for the Mark I, II & III then?

Dunno. I do know that the substitution has worked.

 

[seatrout]

The MkII sear will work.

Here is the reply I got from TandemKross when I asked if the Mark II sear would work in the Mark IV -
"Unfortunately they are not compatible. We will be carrying a MKIV Sear very soon they are on there way to us now."

 

[seatrout]

I bought the Volquartsen accurizing kit today since the sear is not yet available by itself. I will attempt to install it myself :?

 

[black029]

Is there some sort of $.25 trigger job you can do on the Mark IV? After paying nearly 1000 bucks for a 22/45 Tactical and a Hunter model, I hate to lay out another $200+ to make the triggers good.