80% 1911

Technical discussions relating to specific firearms.

80% 1911

Postby pfournier126 » Fri May 13, 2016 11:32 pm

Hi all, anyone on here have any experience building 1911's, especially 80% kits. Open to any advice on jig tocut the frame, hand fitting tips etc. Thanks
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Re: 80% 1911

Postby shovel1966 » Thu May 19, 2016 5:31 pm

After completing several billet, forged, and polymer 80% AR lowers and a few forged AR-308 lowers, I have looked into the 80% 1911 kits and also the 80% Glock frame kit. After extensive research, I determined it to be be too difficult, too high risk of messing it up, or not cost effective. As an example, finishing the Glock 17 kit into a complete functioning firearm, it would cost close to $800 after buying all the parts to complete it. I know this thread is more geared towards the 1911 platform. I actually would be more inclined to attempt the 1911 if I could talk first had to someone who successfully completed one, I knew exactly what parts fit flawlessly, and how much the final product would cost.
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Re: 80% 1911

Postby pfournier126 » Thu May 19, 2016 9:12 pm

I have found a 1911 jig that requires a few holes to be drilled, and the milling is done by hand at a slow pace to cut the rails. I believe it is called the "Phantom jig". What jig did you use for the 80% AR's? I have a few paperweight lowers I'd love to finish eventually
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Re: 80% 1911

Postby shovel1966 » Sat May 21, 2016 3:01 am

pfournier126 wrote: What jig did you use for the 80% AR's? I have a few paperweight lowers I'd love to finish eventually


I have used Juggernaut Tactical's first version with good success. Then I got their upgraded Universal jig which was a little better and accommodated more manufacturers lowers. I tried a jig by TR Enabling which didn't work out that well and I ended up using the Juggernaut Tac's jig to complete it. THEN......I found the VERY BEST jig of all...80 Percent Arms now makes a jig called the EZ Jig. It allows the use of a common router instead of a drill press to mill out the fire control pocket. The basic jig is the same as the others except for the top plates. I actually sold two of my other jigs (that still worked well, but took 3 times as long and were a much more labored process.)

I could probably write a term paper on how much easier and quicker it is to finish a quality 80% lower using the EZ jig as compared to all others on the market. I have completed Forged 6061-T6 lowers, billet 7075-T6 lowers, and polymer lowers on this jig with great success.

I would also be happy to answer any and all questions regarding this post. Picture is of a EP Armory polymer lower in desert sand color. The PDF instructions are AWESOME and a great instructional video is also available. Link to the jig is below the photo.

IMG_4533rz1.jpg


http://www.80percentarms.com/products/80-ar-15-easy-jig
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Re: 80% 1911

Postby demjones » Sat May 21, 2016 3:45 am

shovel1966 wrote: THEN......I found the VERY BEST jig of all...80 Percent Arms now makes a jig called the EZ Jig. It allows the use of a common router instead of a drill press to mill out the fire control pocket.


I can enthusiastically second this. I don't have as much experience, but have found the EZ Jig easy to use. My first 6061 lower took about 2 hours to finish. I bet I can easily cut that to 1.5 or less.
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Re: 80% 1911

Postby shovel1966 » Sat May 21, 2016 5:49 pm

demjones wrote:
shovel1966 wrote: THEN......I found the VERY BEST jig of all...80 Percent Arms now makes a jig called the EZ Jig. It allows the use of a common router instead of a drill press to mill out the fire control pocket.


I can enthusiastically second this. I don't have as much experience, but have found the EZ Jig easy to use. My first 6061 lower took about 2 hours to finish. I bet I can easily cut that to 1.5 or less.


I still probably take two hours to complete a 6061 when considering that I take my time, check and double check measurements, clean up shavings, getting tools out and putting them away, etc. My daughter is at school and my wife is at work so I tend to take my time and not rush the job.
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Re: 80% 1911

Postby cookiecutter » Thu Oct 13, 2016 10:12 pm

I've made some 80% AR lowers ... but have always used a mill. The first one was a manual mill with the Tactical Machining jig ... the rest have been on a CNC mill that I made. I still use the TM jig to hold the casting, but now the process is: Set it up and push the button. Switch the cutter to a smaller diameter and push the button once more to get the trigger hole. The last one took about 5 minutes to complete and another 30 minutes to engrave the text and drawings I wanted on the sides.

I've only made one 80% 1911 ... I didn't use a jig for that one. The setup time was INSANE, but I went slow and didn't make any mistakes. You always cut them so that they barely go together and then use grinding compound on the rails to hand lap them into a smooth cycling wonder :D Realistically, they are probably easier to screw up, but if you go slow and measure everything twice before you cut, they can be done successfully, even by a relative novice ... the 1911 was the first project I ever tried on a mill and it was the first 1911 I ever owned and the first time I had ever seen a 1911 that wasn't fully assembled :shock: All in all, I thought it was a great experience and I would probably do another one if someone offered an Officer's sized frame in 7075 Aluminum ...

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Re: 80% 1911

Postby cookiecutter » Fri Oct 14, 2016 12:13 am

I was just going through my email and saw an ad from CDNN and noticed that they have complete 1911 slides on sale for $130 ... they do have sights, but don't have a barrel.

They also have stripped Remington slides for $100 that come with a rear sight and a barrel ... if a person was going to build an 80% 1911, these would be screaming deals ... especially the Remington deal.

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Re: 80% 1911

Postby newportri » Fri Oct 14, 2016 1:04 am

I have wanted to make a 1911 from scratch for a while.
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Re: 80% 1911

Postby Spiela » Mon Jul 03, 2017 9:24 pm

I know this is an older post but I found a pretty useful resource for 80% 1911 builds. A user on Reddit documented his build on youtube, it is long and he's not a professional cameraman but I was interesting (https://www.reddit.com/r/guns/comments/ ... re_within/)
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