AK Sponsor
Posted: 2/9/2005 12:20:52 PM EDT
|
AMD-63 on a Coldsteel blank. I fit the front trunnion and found that the cut on the front of the receiver wasn't perfectly straight so I ground it down to match the front handguard more closely. THis of course required me to set the front trunnion back about another .040 or so. I opened the magwell and it seems to be OK other than a little more gap at the front. Before I go any further I want to know if setting the front trunnion back that slight bit has messed up the trigger and pin holes. When I set the trigger guard on the blank the holes on it (as opposed to the ACE template the was included) are back about .020-.030 (didn't measure, just eyeballed) The template shows the trigger cutout partly under the rear of the trigger guard. I had Coldsteel stamp the dimples in for the pins. Can I just drill the pin holes on the dimples and ignore the template or am I screwed? If I'm OK where do I go from here? Drill the pins, fit the FCG and then the rear trunnion? Thanks in advance. Longhunter |
| On the bottom of the receiver you have to locate the trigger guard exactly according to the template. Go ahead and put it where it has to go. Then put the hole for the pistol grip where it has to go according to the template. Then, put the trigger and bolt pin holes where they are centerpunched, but use a drill press and only drill from the side that has the dimples. That way the pins are perfectly square. Yes, that may put your trigger into the trigger guard about .020 off from perfect, but if you don't tell anyone then only you will know. There is plenty of room in the trigger guard for the trigger to be moved slightly, but you have to have the trigger guard where it is supposed to be to hold the mags, and you have to put the trigger and hammer pins in the dimples. I had exactly the same problem with the one I did, and after much measuring, I did it, and it works perfectly. |
|
Harold, OK, let's say I jumped the gun and misdiagnosed the problem. I checked it against a friends AK and I'm good on the front trunnion and trigger guard. The magwell is a little too large (1/8") in the front but no big deal. That's just cosmetic. All it required was to bend the guard slightly to make it longer and line up with the rear hole on the template. Sounds to me like we have the same problem. I figure I'm pretty much stuck with the X & Y holes where they are. The X is about 1/8" futher back and 1/32" lower than the template and the Y is about the same. Am I OK to drill for these pins or is there a problem? FWIW the trunnion holes lined up almost perfectly. Should I remove the template and position it to line up with the X & Y holes? Other than the magwell there I haven't put any holes in this thing yet. Thanks in advance. Longhunter |
| An AK receiver isn't an exact thing. With all the effort and care you are giving I am sure it will work fine. A lot of people slam them together, and they still work. This isn't an AR(and I like the AK much better). Put the top cover on and see where the rear of the blank is. When finished it will end up just about an eight to a sixteenth of an inch from the end. If you have plenty left on the end you might want to trim a little more off the front of the blank. I think it will work fine as it is though. The one I did worked better after I removed about .120 inch off the front. The most critical measurement I have found seems to be the placement of the trigger guard, and the plate under it. That plates placement determines if the magazine is too tight or too loose. If the bolt moves back in the blank or forward a little, the hammer will still hit the firing pin. The distance between the two pins is more important than the actual location. If you can move the blank forward and still have enough on the back end, it will put those holes more where they go. Don't drill holes for the trunnions until the length and position is final. I use a C clamp to hold the front in place when I do the magwell, and to measure for the FCG. |
AK Sponsor