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80% Frames....Anyone Done It? Are they Available in Aluminum?

10K views 30 replies 13 participants last post by  rhjeepdriver  
#1 ·
Hey all.

Just came upon a video and watched it about building a 1911 from an 80% frame. I knew this kinda stuff was available for Glocks, but I had no idea they were in 1911’s too. My reasoning was that it would require tools and machines that very few people have, consequently there wouldn’t be a market for them. I was wrong!! No shock there! The video I watched had a guy doing the frame in a jig where a mill wasn’t required. It was just like a planer for wood, only this was for metal.

After he finished it looked impressive and the slide he put on it was as snug as could be and required no lapping compound or further sanding.
I immediately started thinking. Just like most all of us that love the 1911, I have thought of assembling my own 1911.

Have any of you done one of these 80% frames? If so, how did it turn out for you? Did you do yours using one of the jigs like I saw in the video or did you go another way towards completion? If you have done one, would you do it again or just leave it to the pros? Post pics if yours please.

Couple more questions, if you don’t mind.
1. I’m assuming since this is more popular than I thought that there are other sizes of frames available like a Commander and Officer. True??

2. Do you know if there are 80% frames available in billet aluminum? What about aluminum in an Officers frame? I’d be most interested in a Commander or Officer frame.

The only negative I can see to doing this project is that you have to get one of the special jigs to do it with. I’m guessing they aren’t cheap.
Does anyone know if that jig can be rented or if there are those that do own the jig that would be ok with letting a person use it for a fee?

Any other info you care to add about a project like this, feel free. The more info and advice, the better!!

have a good weekend!!
Larry
 
#2 ·
This place has both 80% and 100% finished frames in aluminum. No personal experience.

 
#5 ·
This is my latest build, done about a year ago, based on a Jem 80% frame and a Jem slide.

746442


Not sure if they still offer the 80% frames, given the current political climate, nor do they offer drill press jigs for finishing the frame. I did this on my lathe and mill.
 
#6 ·
This is my latest build, done about a year ago, based on a Jem 80% frame and a Jem slide.

View attachment 746442

Not sure if they still offer the 80% frames, given the current political climate, nor do they offer drill press jigs for finishing the frame. I did this on my lathe and mill.
Nice work.
 
#8 ·
I have a Matrix Rail Jig and Decking jig I'd like to sell for 250.00. I used it once and it made up a really nice 1911. It was a great build in that it was fairly easy to get the frame machined without the need for a milling machine. I've also done a frame up using a jig designed to for using a milling machine with excellent results. This does not make me an expert but it sure helped me fill a spot in my armory with a couple of very nice pistols that were a pleasure to shoot. Drop me a pm if interested in these jigs.
 
#17 ·
Not my words Sir, but those from someone on the forum here. No biggie though. ;)

Everything, with the exception of the ignition parts (Extreme Engineering parts don't need touching) and the RMR have been cut on and fitted on this thing. It's not perfect, but I'm very happy with the way it turned out.
 
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#20 ·
A friend of mine built several a few years ago when they were really popular, at least around here. He told me that the aluminum frames were incredibly quick and easy to mill as compared to the steel variants. It looked nice and they all shot great. Miss that guy. Like so many of late, he ended up moving out of California.
 
#21 ·
I bought a Phantom jig, used and ABUSED. The hammer and sear pin guide holes are part of the aluminum. There are no hardened inserts like the hammer and sear pin guides on the Vytamenc jig, which are hardened steel. If you do a carbon or stainless steel frame get a set of extra cutters before you begin, you may use both. The aluminum usmuch faster and pleasant to cut. Cutting oil is your friend. FWIW, I did use a through screw on the end of the jig without the screw going through it. Not over torqued but enough to eliminate the end to end uneven depth of cut.

Last frame I did I used the Phantom jig to cut the rails and lower the barrel bed. I used Vytamenc to drill the sear and hammer pins. Then I followed drilling the pin holes with sear and hammer pin reamer.

I have purchased the Matrix jig for the next frame rails. My intent is eventually a mill will replace these jigs.

FWIW, the pistols built on these jigs perform very well, one of which is an aluminum frame CCO. Neither of them are what would be considered permium parts builds.
 
#22 ·
If you go the 80% route, DO NOT BUY AN 80% FRAME FROM FUSION FIREARMS. Their 80% frames are garbage. Out of spec and no frame feed ramp cut. Not to mention horrible customer service when asking about their frames. You’ll spend more money trying to get the thing usable.
 
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#23 ·
bought some sights from Fusion a few years ago. The ones that didn't fall right through the dovetail lost the white dot by the time I went through one mag. Swore off Fusion parts.
Used my brand new Stealth Arms Phantom Jig for the first time the day. Drilled hole for hammer pin as instructed, one side at a time using a drill press being very careful. Hammer pin won't go through. Right side hole is sli
 
#24 ·
Right side hole is slightly lower than the left.
Don't know why that posted before I finished.
 
#27 ·
Worked the bit through the jig by hand before drilling. Did that on both sides until I was sure that the bit would pass through the jig and align on the frame. Drilled slow and careful. After finding the hammer pin would not pass through the frame, I checked to be sure there was no burrs or obstructions then ran the bit from the left all the way through to the right until hammer pin went through as it should, but it has a little clearance at the bottom of the pin on the right side of the frame. Now looking at the Matrix Jig with the hardened drill bushings, anyone have any experience with those?