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- Aluminum for lowest weight: Stealth Arms 1911 80%
- Maximum customizations options, stainless steel to better sights or added rails: 1911 Builders
- Just the frame: Tactical Machining
Comparison Chart
| Company | Stealth Arms | 1911 Builders | Tactical Machining |
|---|---|---|---|
| Calibers | .45 ACP | .45 ACP, 9mm | .45 ACP |
| Frame Material | 7075 Aluminum | 4140 Steel, 416R Stainless, 7075 Aluminum | 4140 Steel |
| Frame Sizes | Government (5″), Commander (4.25″) | Government (5″), Commander (4.25″), Officer (3″ & 3.5″) | Government (5″) |
| Finishing Notes | Can use Phantom Jig to cut rails without a milling machine | Can use hand cutter jig to cut rails without milling machine. Steel and stainless frames require decking. | Can possibly use rail cutting tools of other companies, but was made for milling machine or careful drill press. |
| Appearance | Very clean cuts and even bead blasting | No first-hand experience | First production batch had minor cosmetic blemishes |
| Availability | All frames, jigs, and kits available as of 5/6/16 | Some steel/stainless frames out of stock as of 5/6/16 | Rarely in stock and almost immediately sold out |
| Base Price | Frames are $165-170 (railed) | Steel ($200), Stainless ($175-230), Aluminum ($150-230) | Steel ($160) |
| Full Kit Price | $1095 | $800-1200 | NA, only frames sold |
Stealth Arms 1911 80%
- Calibers: Right now they only offer .45 ACP frames but should have ramped 9mm frames coming out soon.
- Frame Materials: Aluminum for now which is much lighter than standard steel 1911 frames.  Here’s a comparison to an 80% Stealth Arms sample, and a completed steel frame Tactical Machining.  It is 4.5 vs 12.9 oz which will equate to the ~30 oz completed weight of an aluminum 1911 and ~40 oz of a steel one.  The weight difference will make carrying easier but also result in slightly more felt recoil.
- Frame Sizes: Government (5″) and Commander (4.25″).  Bobtail versions and also 30 LPI front strap checkering options coming out in Summer 2016.
- Finishing Notes: I have not completed a Stealth Arms kit but since the frame is aluminum, I would likely use the Phantom Jig which cuts the rail without the use of a milling machine.  Definitely the hardest part of completing a 1911 80%.  You can see how I did it with a drill press for my Tactical Machining one (not fun).
- Appearance: Looks great…I couldn’t find any cosmetic blemishes on either the standard Government model or the Tactical railed model they sent me. Â Also love how you can choose for the surface to be bead blasted so you can more easily paint it yourself later, which is why they look a little white.
- Availability: As of the writing of this article on 5/6/16, they have everything in stock including the frames, jigs, and parts kits.
- Base Price: Their 1911 80% frames vary from $165 for the Government model to $170 for the Tactical railed model.
- Full Kit Price: The complete kit will run you $1095 and contains all the parts you need to build a 1911. If you get their Phantom Jig that will run you another $200 so it’s probably best to split with a friend. Â My original Tactical Machining 1911 build ended up costing ~$1300 so this is comparable.
- Other:  All their parts are made in-house and I know you can’t see it in the picture, but they state that because of that they maintain the ease of drop-in fit with their frames and slides.  Plus they have a “one screw up” policy where you can turn in a messed up frame for a new one at a lower cost.
1911 Builders 1911 80%
- Calibers: .45 ACP and 9mm for some of the stainless steel Officer (3″) kits
- Frame Materials: Three to choose from! Â Standard steel, stainless steel, and aluminum.
- Frame Sizes: Several sizes for each of the frame materials. Â Steel (Government, Commander), Stainless (Government, Commander, Officer), Aluminum (Government, Commander).
- Finishing Notes: Also comes with a hand cutting rail jig (picture looks to have the Stealth Arms logo) that will likely easily cut through the aluminum but might require extra bits to get through the steel and stainless. Â Also stainless and steel frames require some “decking” either manually or with another jig. Â This means that you need to remove some material from the top of the frame.
- Appearance: Haven’t had firsthand experience with them.
- Availability: As of 5/6/2016, some steel/stainless frames look to be out of stock
- Base Price: Steel ($200), Stainless ($175-230), Aluminum ($150-230).  Ranges occur since some have rails, checking, or bobtail grip.
- Full Kit Price: Ranges from $800-1200 based on quality, sights, and frame size. Â Some kits include the rail cutter which makes those cheaper than Stealth Arms.
Tactical Machining 1911 80%
- Calibers: .45 ACP
- Frame Materials: 4140 Steel
- Frame Sizes: Government (5″)
- Finishing Notes: Might be able to use Stealth Arms’ rail cutting jig, but was originally intended for milling or careful drill pressing.
- Appearance: I got two in their first batch and both had some minor cosmetic blemishes that I had to file away.
- Availability: Currently sold out and I rarely see them back in stock. Â They spurred the whole 1911 80% game but have seemed to let it die out.
- Base Price: $160 for the frame, no kits
11 Leave a Reply
I just bought my 80% lower from stealth arms. Did all the cutting ( slide rails and barrel seat) and for some reason the slide doesn't go forward all the way without some force and gets stuck . I have no idea what to do. Any help would b much appreciated.
You need to measure the inside of the slide from one end to the other. Some where along it you will find the smallest dimension. Your frame has to be .003" smaller to allow it to move freely.
There is another company offering 80% 1911 frames, from which I would like to steer potential purchasers away: The Buffalo, in Ventura, CA. I ordered an 80% frame from The Buffalo online, using my debit card. After several days of no email confirming the order, I began to wonder what was up. I sent 2 emails to the 2 different email addresses listed on the site. No reply to either. Looking at the website again, It seemed rather... sparse. Not a lot of information on it - not really that well done. I did some research and discovered Better Business Bureau had several complaints on them for not filling orders and extreme refund hassles. I also found a complaint on ripoffreport.com to the same effect. The bottom line is that I had failed to do my homework, so I'm out that money unless I file a complaint with my bank, but I really don't have time to do that. So stay away from The Buffalo.
Same here. Purchased 17Oct2018. Haven't received anything as of 20Apr2019. Still trying to get money back. They don't answer calls, e-mails, nothing. Worst business I've ever dealt with.
They also violate Federal trade laws due to lack of correspondence. I filed a complaint with the FTC a month ago, but haven't heard anything back yet. My suggestion is don't wait more than 120 days to file a complaint with your bank.
Sealth Arms was my first 80% build. The use of their Jig was straight forward and the directions very clear. The frame did not initially fit the slide after using the jig: which was good as I was interested in a tight fit. 30 minutes with a stone (done slowly and deliberately) I went from putting the frame to slide with a rubber mallet to barely being able to get it on. With some polishing compound and elbow grease I achieved a very nice fit. Other parts needed some fitting especially the extractor, grip safety and thumb safety. However, most importantly the barrel and lug needed almost no fitting. It locked up nicely and was very tight. On the range there were no malfuncitons and it shot very nicely. All in all very high quality and extremely entertaining to build. Definitely 5 star service, comunication and quality.
Wow, thanks for the write-up of your experiences with both, Ryan!
I just finished a Stealth Arms kit and as someone with zero experience in gunsmithing or machining it couldn't have been easier. They indicate in their instructions that hand fitting will be required with the beavertail grip safety and the thumb safety but I also filed an undercut in the slide stop to make it easier to snap over the plunger tube pin.
The Chip McCormick magazine they sent would not insert or extract from the frame without a good deal of force applied so I spent a lot of time polishing the inside of the frame and also removed 1 1/4 coils from the magazine catch spring as well as some polishing of the mag catch bump that holds the magazine in place.
Other than that all of the rest of their parts drop in and fit great. I did do some polishing on the trigger bow and ignition parts for a smoother trigger and all of those instructions are also included.
I think its a great kit and when they come out with a 9mm I will probably be in for one of those too.
Thanks Kevin for your insight, I think a lot of people will benefit from your experience in the fitting.
I'm patiently waiting for their 9mm kit too!
Hey Eric,
Just wanted to point out a typo. Under the 1911builders.com complete kit picture, you captioned it as "Stealth Arms Build Kit."
It would also be nice if you mentioned that Stealth Arms parts are all made "in-house", and that they guarantee everything they sell. Also, Stealth Arms offers an industry exclusive "1 screw up guarantee" meaning if you botch your frame during the finishing process, they will replace it with a brand new one for a very small fee, no questions asked. If you would like more information to add to your write-up, please feel free to email me. Yiur article is a bit under-researched, but I would be glad to help you out with it. I have experience with all 3 companies. I will try to stay as unbiased as possible, as you can tell from my email address that it may be tough. Haha. Thanks!
Thanks Steve, will be reaching out!