Ruger MKII Dis/Re-assembly Instructions Detailed

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For all those people who say it is so hard, a video clip... 30 seconds...

the same clip without the annotations:
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AVI format 4 Megs

1) First pull back the bolt and make sure there is not a round in the camber, and also make sure there are no .22 live rounds in your work area.
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2) Remove the magazine from the pistol and release the bolt by pulling it back and releasing it (using the bolt stop to release it may eventually wear it to the point of it not locking the bolt back). Now point the pistol in a safe direction and pull the trigger (dry fire is ok with this pistol, even without a snap cap, according to Ruger). The main spring housing will not come out if the pistol remains cocked, so you must pull the trigger.

3) I use a large paper clip to catch the point on the main spring housing (a screw driver may also be used but could slip off and scratch the gun). Pull out the pointed tab on the rear of the main spring housing. This unlocks the bottom of it. Then swing out the housing, and pull it down. The grip shown in the pic to pull it down will give you good leverage for stubborn (new) ones that may be tight. If it still refuses to budge, pick it up and go to a wood counter and while pulling, push on the top button (red arrow) to help get it out.

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4) Now you can slide the receiver forward and off the frame. On new guns this may be tight but will loosen up. If it is tight it may require you to support the rear of the receiver (be careful if you point the gun up the bolt may fall right out, you may want to remove it first) and tap on the front of the frame with a rubber or wooden mallet, although I can generally do it on mine with just forward pressure with my thumb (like in the pic) and pulling on the barrel with my other hand.

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5) Now slide the bolt back and out of the receiver.


Inserting the On Target Guns trigger shield

(On target has gone out of business, but people have made similar shields from soda or beer cans)
6) With the receiver off, start the tabbed end of the shield into the opening forward of the chamber on the underside of the receiver. With a twisting motion insert it all the way insuring that the rear of it sits flush on the receiver (the extra crease in mine is from my first try of inserting it incorrectly). I had to bend back the tab that goes into the mag slot a bit as shown in the pic to get the top portion to stay flush with the receiver during assembly. When assembling the receiver and frame slide the bottom tab into the mag well and make sure that the top portion stays flush with the receiver.

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Reassembly



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7) First make sure you still have this pin in place in the bolt (red arrow)!! It is the firing pin stop pin and if the pistol is fired without it, it will damage your receiver. Now slide the bolt into the receiver making sure it goes all the way in.


8) Slide the bolt into the receiver making sure it goes all the way in.
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9) Now place the receiver on top of the frame and slide the receiver to the rear. If it is tight you may need to use the rubber mallet again to get it fully locked into place.


10) This is how the hammer, hammer strut and main spring fit together in the gun (first pic). Notice that the strut goes into the cup in the main spring housing.

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11) Look at the hammer and hammer strut from the back of the pistol. The hammer is probably still in the cocked position and the strut resting on the cross pin (as in the first pic). With the barrel of the pistol pointed down pull the trigger and with a small screwdriver push the hammer forward. If your hammer is forward the hammer strut will be above that little cross pin. It may also just fall forward with gravity if you hold it barrel down and pull the trigger.

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12) With the barrel still pointing down now insert the main spring housing and push it up locking it into place. If it does not want to go all the way up into place wiggle things around a bit (push the bolt forward a bit) and push kinda hard, it will pop into place, and should be sticking up like a button above the top of the receiver when it is in all the way. If it refuseses to go up remove it and make sure that the hammer strut is out of the way.

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13) Now to get that hammer strut to engage the main spring housing correctly you have to point the barrel in the air. This causes the hammer strut to rest on the main spring housing (red arrow). If when you point the pistol straight up, the hammer strut does not fall and come to rest on the main spring housing, you will have to stick something up in there and pull the hammer strut down (it might stick or something, a dental pic or small screw driver works well). Now swing the main spring housing closed and there should be some spring tension (you can press it in and it will go flush but pop back up when you release pressure) just before it goes flush with the grip (second pic). If it goes completely flush with the grip(third pic) the hammer strut is not engaging the spring housing correctly. Swing the main spring housing out and point it up and close it again to try to line everything up. Then slide the locking tab up on the main spring and you are done!! Pull back on the bolt, let it slide forward, while pointing in a safe direction, pull the trigger and you should hear/feel the click.

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