Mark II Re-Assembly (please murder me)

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TITAN308

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So, before we start let me say that I have watched all the videos and scoured google for hours. This isn't your usual "Mark II" thread as I am wondering if a part has gone faulty.

If I put the MSH in with just the frame (no receiver yet) the hammer strut functions like its suppose to and can be fired, cocked, rinse and repeat.

But for some reason when everything is put back together I always end up with a bolt that will only half open.

I swear I've done everything the internet has advised, trigger block up, make sure the strut aligns with the "third" line in the MHS, dance like a chicken, spin three times and say "ko-ko-kochoo!" three times.

Could there be something that is just broken or not working right?

If you guys don't believe me I'll gladly video tape myself (in HD) with all close ups of the different "assembly" tricks.

:banghead::banghead::banghead:
 
Before you close the MSH in the gun, pull the trigger and use a pencil or something like it to reach in and push the hammer all the way forward. Then point the muzzle straight up and close the MSH.
 
Before you close the MSH in the gun, pull the trigger and use a pencil or something like it to reach in and push the hammer all the way forward. Then point the muzzle straight up and close the MSH.
Click to expand...

Doesn't work. Still get stuck with a half cock.
 
Just found something interesting.

So I put it all together minus the bolt carrier.

Using a pen to push the hammer down from the front side its working just fine...

What on earth could cause the failure on the bolt carrier in this gun? /boggle.
 
Something with the actual bolt is causing the problem - and I can't figure out what it could be.

I'm telling you I've been over THAT website and many others many many many times. I have isolated the problem to the bolt carrier.
 
Was it working properly when it was disassembled? If so, it should work properly now, providing proper reassembly.
 
From the link: "Swing mainspring housing nearly closed, tilt pistol slightly rearwards so hammer strut falls onto mainspring housing ledge, close housing slowly, ensuring hammer strut stays in place."

Once I visualized this step, I drew a schematic of it in my manual so I could remember what I needed to do to get it right.
 
From the link: "Swing mainspring housing nearly closed, tilt pistol slightly rearwards so hammer strut falls onto mainspring housing ledge, close housing slowly, ensuring hammer strut stays in place."
Click to expand...

Tried that method as well.

Telling you. It operates correctly when the bolt is not in there. I can manipulate the trigger to locked position with a pen. Fire. Rinse and repeat.

Guess I'm gonna call Ruger tommorow.
 
Well keep taking apart and putting back together. If it was working when you took the Mark apart, then the problem is reassembly. Keep trying, you will get it.
:banghead:
 
Step #6 was the most important part to me. Make sure this step is done.
I could put the pistol back together, but the bolt would only come back part of the way.I did this with pistol unside down, trigger pulled and pushed the hammer at least 1/8 to 1/4 inch. You will see it move. Use a something slim and make sure you see and push the hammer forward. This got me time and again. When I assembled and the pistol worked, I pulled apart again just to see if I could get the assembly correct again. I did.


Squeeze trigger and push hammer fully forwards (uncocked position ) with a punch or other long tool
 
You need the hammer more forward than just the fired position. You need to push it with something to get it there, most new ones won't fall on their own until they're worn a little. The hammer strut will be high at the back of the gun so it "dangles" on top of the center of the MSH as you are closing it.

Push the bolt stop all the way in so the rounded top is above the top of the upper. Swing the MSH up and push the hammer forward while holding back the trigger. The muzzle up and close the MSH.
 
The hammer strut is getting caught behind the frame crosspin. Pay attention to this and you should have no problems. Whenever you get it closed and the bolt only opens halfway, this is the problem.

And yes, I have been where you are.
 
tuj has it. The hammer needs to be in the fired position and the strut needs to be on the mainspring cap. Insert bolt and msh, but do not hinge closed. Roll gun counterclockwise 90 degrees (gangsta style) and roughly parrallel tot he floor. Shake it while holding the trigger down to get the hammer to fall while keeping the strut from swinging too far toward the bolt. It is easier to do than describe, and once you have done it a few times it is no problem. Good luck.
 
Tried that. Does not work. lol

I can see I'll have to video myself doing all this for people to believe me.

Like I said I can get the strut to function fine in the MSH:

1. Just putting it in the frame (when the receiver is not installed yet)

2. Gun put back together but the bolt not in

Very very strange.
 
Try this: Try putting together the gun without the upper on. See if you can get it to function that way.

If the bolt is only retracting half-way, the hammer pin is caught behind the frame cross-pin. You need to point the gun upwards during MSH swing-in so that the hammer strut dangles free and slots into the MSH depression for the strut.
 
Try this: Try putting together the gun without the upper on. See if you can get it to function that way.
Click to expand...

Uh...

BWCustoms said:
Like I said I can get the strut to function fine in the MSH:

1. Just putting it in the frame (when the receiver is not installed yet)
Click to expand...

I guess I refer to it as a receiver instead of an upper. lol

If the bolt is only retracting half-way, the hammer pin is caught behind the frame cross-pin. You need to point the gun upwards during MSH swing-in so that the hammer strut dangles free and slots into the MSH depression for the strut.
Click to expand...

You guys are just not gonna believe me until I provide video footage as proof are ya? :p

Can't blame you I guess with the amount of crud about this guns assembly around the internet.
 
So without the upper installed, you can push the hammer back, and it will cock and fire ok?

When you put the upper on and the bolt in, can you push the hammer up into the bolt using a pencil or screwdriver?
 
So without the upper installed, you can push the hammer back, and it will cock and fire ok?
Click to expand...

Yes. And I can do the same with the upper installed, minus the bolt carrier.

Once the bolt carrier is added to the dance is when the problem occurs. Yes I have used a very thin punch to verify the hammer is as far forward as it will go (even using a light tap from a rubber mallet).

So someone mentioned the hammer should actually go so far forward as to no longer be completely vertical (straight), hammer falling forward towards the front slightly.

I will say when assembled the farthest the hammer will go is directly up just as all instructions indicate with the strut hanging towards earth also perfectly vertical. Then the dance starts to get the strut to fall into the dimple of the MSH.
 
About a year ago I spent THREE HOURS trying to get the strut to fall into place.

Finally, I went to Ruger.com and downloaded the current owner's manual and followed the re-assembly process using the text and drawings. It went right back together!

You'll get it, and you'll fell much better. Good luck.
 
This is the position of the hammer strut when you have the hammer forward to enable you to close the MSH with the strut on top of the cap. When it is this far forward, I then put the bolt stop in, point the muzzle up and close the MSH.

6830564523_b956e1771b_z.jpg


Note: with a Mk III, the magazine needs to be in the gun to pull the trigger and push the hammer forward.
 
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