Ruger Mk IV Trigger

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Ruger Mk IV Trigger

Post by Boxturtle on Sun Jan 14, 2018 12:30 pm

Today I installed a Volquartsen trigger kit in my Ruger Mk IV.  NRA precision pistol rules, require that the magazine disconnect be retained.  However, I could not get the Volquartsen parts to work with the Ruger hammer.  With the Volquartsen sear, disconnect (trigger bar), and trigger, the Ruger hammer could not be positioned so that it would cock.  The Volquartsen hammer on the other hand, dropped right in and functioned perfectly.


I'm going to use the Volquartsen parts until I get  caught and the match official disqualifies my gun.  At that time I will switch to my Ruger Mk II to finish the match, and when I get home I will remove the Volquartsen parts.  Then I will polish the Ruger sear and hammer notch and reinstall the factory parts.


Why can't Volquartsen design a hammer that will retain the magazine disconnect so we can use their parts legally in competition?  I've written to them, as this is unsatisfactory.  I'll let you know what they say.

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Re: Ruger Mk IV Trigger

Post by Wobbley on Sun Jan 14, 2018 1:13 pm

I believe magazine disconnects may be removed under NRA rules?
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Re: Ruger Mk IV Trigger

Post by MarkOue on Sun Jan 14, 2018 1:46 pm

For EIC Service Pistol the safety must be functional.  For NRA competitions, why would a safety need to be functional on a devoted target pistol?

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Re: Ruger Mk IV Trigger

Post by LenV on Sun Jan 14, 2018 2:00 pm

Magazine safeties are not considered safeties and are not required to remain functional. 3.7

http://rulebooks.nra.org/documents/pdf/compete/rules/rul_precision_pistol_16.pdf
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Re: Ruger Mk IV Trigger

Post by rich.tullo on Sat Jul 28, 2018 6:40 am

LenV wrote:Magazine safeties are not considered safeties and are not required to remain functional. 3.7

http://rulebooks.nra.org/documents/pdf/compete/rules/rul_precision_pistol_16.pdf
Just my 2 cents I think on the Mark III you have to keep the Chamber indicator. 

In the Mark 4 removing the Mag Disco is ok because it is not a safety.
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Re: Ruger Mk IV Trigger

Post by Wile E Coyote on Sat Jul 28, 2018 11:45 am

rich.tullo wrote:
LenV wrote:Magazine safeties are not considered safeties and are not required to remain functional. 3.7

http://rulebooks.nra.org/documents/pdf/compete/rules/rul_precision_pistol_16.pdf
Just my 2 cents I think on the Mark III you have to keep the Chamber indicator. 

In the Mark 4 removing the Mag Disco is ok because it is not a safety.
I don't think the chamber indicator is considered a safety under 3.7 either.

The rule refers to safeties that prevent the firing pin from unintentionally contacting the cartridge causing discharge.

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Re: Ruger Mk IV Trigger

Post by Chris Miceli on Sat Jul 28, 2018 11:59 am

Wile E Coyote wrote:
rich.tullo wrote:
LenV wrote:Magazine safeties are not considered safeties and are not required to remain functional. 3.7

http://rulebooks.nra.org/documents/pdf/compete/rules/rul_precision_pistol_16.pdf
Just my 2 cents I think on the Mark III you have to keep the Chamber indicator. 

In the Mark 4 removing the Mag Disco is ok because it is not a safety.
I don't think the chamber indicator is considered a safety under 3.7 either.

The rule refers to safeties that prevent the firing pin from unintentionally contacting the cartridge causing discharge.

Mag disconnect is not an operational safety nor is the chamber indicator
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Re: Ruger Mk IV Trigger

Post by cdrt on Sat Jul 28, 2018 3:22 pm

Chris Miceli wrote:Mag disconnect is not an operational safety nor is the chamber indicator

Exactly.  Chris beat me to it.  Both can go away under CMP or NRA rules.
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Re: Ruger Mk IV Trigger

Post by rich.tullo on Sat Jul 28, 2018 9:50 pm

All I know is two things after working on a Ruger. 

1) Bill Ruger had some sense of humor when he invented that gun because only a man with a sense of humor can do some of things he did in that design. He must of said to himself, "Well I can do this this way, or I can do this that way and drive people nuts. LMOA"

2) After doing a trigger job and looking at the extra parts, I do not feel entirely right.
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Re: Ruger Mk IV Trigger

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