poison123

Just made a interesting observation. When I assemble the entire thing together minus the barrel bushing Everything lines up and appears to go into battery. When I put the bushing in, thats when it won't go into full battery and gets the drag/toughness on racking it. So I'm not entirely sure if I should grab another bushing and try fitting that, or lap the top lugs some more.

So I spent a hour doing that this morning. It looks like its almost there when I let the slide ram forward, but it takes effort to rerack when I do that. *edit* and more time spent....and I've got no clue at this point why its not going into full battery and why its so damn tight and takes force to rerack the slide now.

Alright got about as far as I think I'm going to get tonight. Cut down the hood a little more, and I lapped the top lugs very very lightly. Now the Firing pin hole is almost perfect as I can tell, and pressing the firing pin through the primer hole is easy with the lightest of force. Got it all assembled now and can not get it to go into full battery no matter what I do. If I let the slide slam shut it'll lock up to the point where the trigger will drop the hammer. But If I ride the slide down it won't made it far enough for the trigger to drop the hammer. I'm not really sure where to go next on it, any suggestions?

So concentrate on the lugs and the not the chamber portion of the barrel right? And I actually already wasted a little bit of time doing the barrel link fitting.....that was interesting to say the least.

Here's another question. It appears I'm getting good top log contact since when I press on the barrel and try to push it out I can't. But my problem at the moment is the firing pin hole is still looking like its a little low with how its lining up. Is the solution to this to lap the top lugs to remove just a little material to get it to get closer to a circle vs the oval its currently at?

Found where its binding at. Its actually where the OD of the bottom of the barrel meets the lower lug. I minorly sanded down that area of the side, so the area just about the bushing that would contact this area on the barrel and it fits great now.

Stock Barrel OD .686 NightHawk Barrel OD .691 As far as the barrel will go in: Top of the barrel with Blue and the marks: Both sides and bottoms look like this, no apparent rubbing: So basically my plan right now is to lap the top of the slide in those areas with 500 or 800 grit paper and work it down till it slides in.

Doesn't appear to. I'm doing comparision from the barrel that was gunsmith fitted to it when it was built awhile back to this new "nighthawk custom threaded barrel". And it looks like its just slightly oversized in a few spots that need to be threaded right. Specifically right before the first lug area ahead of the chamber. I'm running out to get some dykem blue and will take pictures of what I mean.

Zero have exp

So I finally got got a threaded barrel for my MARs custom. In my first attempt to fit it I'm running into one issue I haven't really seen on any of the forums. Inserting the barrel hood first like one would normally do for hte barrel I can maybe get it to go in 1.1" into the slide before no "easy" amount of force will get it to go in further. I'm assuming I'm going to need to dykem blue it, and slowly sand down the OD of the chamber area to get to slide in nicely. My question is...how loose should I make the fit, should I try to keep it nice and tight? Or make it fairly loose so it comes in and out fairly easy?

For some reason the forum isn't letting me post through Chrome :/

Thanks! I am very happy with this. I did mis-speak earlier in the thread. I said she would go bang now and that turns out not to be the case. I went to tune the extractor and realized that it was a short chamber SO Clymer just delivered my finish chamber reamer and by Saturday she will be a shooter. :-)

dskin, I am feeling ya. I'm trying to figure out whats going on with my barrel order, once thats resolved I'll order the slide to go with my frame. And then I'm just gonna bite the bullet and see if I can get this done with files to start. And once thats done I'll screw around with the mill.

How much do you need to "open it up"?

Griz what actual mil is that?

Cool thanks.

So say you were fitting the bushing to the slide, you reduce the circumference in areas to make it fit. I'm assuming you do the exact same for the bull barrel right?

So here's a question, what method are you using to fit the bull barrel to the slide? I.E. Profiling it.

Its simple....we are our own worst enemies when it comes to expendables and the market. First sign of something in the Gov world we start eating each other.

You guys are killing me. I've really got to look for some online CNC courses now.

lol I actually got money back from the feds this year. Felt good.

What was the info?

Gotcha.

Did you do the checkering yourself on the backstrap?

It does in fact make you wonder about some of the smiths...and just how much work they have lined up to be completely filled for 2+ years.