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Posted: 11/29/2004 6:16:08 AM EDT
| I am preparing to set the rivets on my trigger guard assembly and was wondering how far down I need to "mash" them. With everything set in its place there is approx. 1/10" of exposed rivet on the inside of the receiver. How far should I take this down when pressing? Thanks for the help. |
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they norm stickout alittle more then that just bring them down till they are 1 1/2-2x the size of shank if you useing an oow ir any other slightly thicker rec take the spacer plate and grind alittle in the corner of the selector tab they fit alot tighter if you do this |
I am using the trigger guard jig by ak-builder with a 20 ton press and have some concerns about the rivets not pressing straight down. Is there anything I should do in preperation for this pressing to insure a professional looking job? |
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Yeah, I used the Tapco rivets and AK builder jig and had the same 'problem' with only a little of the rivet sticking up. It's fine...you really need very little sticking through. The pressure of the press will expose a little more too. The slightest expansion makes them immobile in the receiver when pressed, and there really isn't much pressure on a trigger guard in normal use. Considering there are 4 of them holding it on in a relatively small area, you'll be fine. I wacked mine with a mallet to see if I could pop a rivet out, and it wasn't going anywhere... take care, Tec |
Did you have to modify your bucking bar that came with the jig? I'm using an OOW receiver so the extra thickness of the walls wouldn't allow the bucking bar to clear the right rail. I had to shave some material off the sides of the bar. |
No, it's the inside dimensions that are different. That's why a Global 1.6mm receiver requires .6mm of material removal on the front and rear trunnion. The outside dimensions are what stay the same. |
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on a global this is true on an oow it isnt thats why you will have to do alittle fitting to the dustcover so it fits but isnt super tight also make shure you try the dustcover for length befor rivets go into rear block on my pistol receiver was 3/16 to long on a polish its 1/8 to long on an eg it was perfect so make shure and check |
Yes, my dust cover does fit a little tight and will only get tighter after the Moly Resin is applied. Would you recommend removing some material on the dust cover itself or the receiver. It's really only tight at the rear and in all honesty it isn't that bad. It will probably scuff the finish but being as this will be a shooter (just like every gun I own) it won't be an issue. Also, my OOW receiver is approx 1/10" too long with my Bulgarian kit. I will be trimming the front edge off after the trunnion has been installed. |
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I jsut had to bend the dustcover a bit. Using an OOW receiver, it almost seemed like it was too tight on the inside and too fat on the outside. I had to shave my rear trunion a bit and bend my dustcover. I'm sure you have thought of this, but before you trim the front of your receiver, make sure that it's the front that needs it and not the rear by test fitting some mags with the trunion flush and with it set back 1/10. On mine the rear needed a little but the front was perfect.
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By moving the front trunnion back approx 1/10" it allows for a lot tighter lock-up of the mags with less wobble. With Bulgarian 21's there is no wobble of any kind and with the 25's there is just a slight side-to-side movement. With the front trunnion set back 1/10" and the rear trunnion sitting flush it allows for the dust cover to fit snug with just a slight amount of gap for fudge factor. |
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That's my website you guys are talking about and I make the jigs myself. They are set to use the 1mm receiver and barely fit so there is more metal covering the rivets. On your 1.6mm receivers what is the inside dimension between the rails? I'm sure it would be at least 6mm less, but since I don't have one to measure it would be nice to get an exact measurement. The rails they use could also be a different thickness. If anything I could see if one length could be for the 1mm and the other for the 1.6mm. |
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