These two pistol braces are not compatible in case you were wondering. The tube diameter and bottom lug on the T91 stuff is larger in dimensions.
Next I started work on prototyping a straight 180B style charging handle for the BRN-180.
Made a quick one out of aluminum to check dimensions and function. Works fine with one exception. Charging the weapon with a traditional grip when the dust cover is closed causes the dust cover to hit your hand and somewhat inhibits a full stroke. A change in hand position will be required to eliminate this.
Based off some of my 3D printed tools I use in the shop I designed these Field Strip Stands for use with any AR180, AR180B, or AR18. I am going to offer these through AR180Parts.com soon.
Finally I have been strugling to locate fire control parts for some folks so I decided to try something radical and see if I could adapt a drop-in AR15 trigger into an AR180.
I got it physically located so it hit the firing pin at the right angle and cocks correctly when the bolt carrier cycles. I have no idea if it will actually have enough power to fire a primer. Range testing to follow. Ranges are closed in AZ right now. If it does fire I have to figure out how to get the safety to work.
If this doesn’t pan out I will still be able to use parts of this design to work up a set of anti walk pins for the AR180.
Finally I was able to get to the range last week before they closed to shoot my AR18 for the first time.
It has an interesting combination of features in addition to the stock. Black paint and a non-welded bolt catch pivot boss, both early features. Welded dovetail scope mount like the later blued model.
I have no information on this model and I am asking if any of you do?
I would be actively trying to buy this except the Corona Virus has hit my work and I will be home for the next 4 weeks without pay. I will be selling off guns and ammo to supplement my savings until we come out the other side. I hope someone in the family gets it as it is an interesting model to add to anyone’s collection.
Spent a full day in the shop just playing with stuff and it was very relaxing.
Started off with a new purchase that arrived while I was out of town.
The KGB Stinger47 pistol strut. It is designed for AK pistols and allows the use of a TailHook pistol brace. For those that haven’t heard the ATF now allows you to add a pistol brace without turning it into an SBR. I kept seeing Josh at Stormwerkz posting pics of his on different guns, including an AR180B. I had to snag one. Click here for info.
I have one of my pistol lowers that has been modified with two holes drilled and tapped so I didn’t need an adapter for mine.
I then decided to try out the folding mechanism I have. I was thinking I would fold it to the left like an original 180 but it blocked the safety so to the right it is.
I could not use the 180B charging handle so I swapped out the bolt carrier for one that I had modified back in the day. Stuck a Sterling charging handle in and Bob’s your uncle.
It then struck me that I have always wanted to add an original 180 ambi safety on a 180B so I fanally said “No more thinking about it, just do it.”
Took a spare safety that I sell as part of the Lower Completion Kit and broke out the tig welder. Stuck a big blob on the end then started turning and milling and filing and cutting a grove for the snap ring.
I then took it back apart and ran it through my table top park tank. The welded on section did not get as dark as I would have liked. Maybe I need to try a different filler metal next time.
I’m really happy with how it turned out even though it took me a long time.
A day in the shop is cheaper than therapy.
I also hand fitted and bagged up the last of the Lower Completion kits. If you are thinking about getting one or need the parts for spares just hit up the link at the top of the page. I am off next week and can get them shipped out right away.
If you are on Instagram give me a follow (BigRix)
I often post pics of what I am up to when I don’t have time to do a full blown blog post.
Work progresses on the AR180S Pistol Grip and I am almost happy with the result but in between test prints I do other stuff to keep my mind busy.
How about a 9mm blowback version of the AR180? Sounds like fun! I think this could be an easier way to build a 180 since bolts and carriers are hard to source. I think this bolt could be made with less sophisticated machines and from less expensive steel.
The pistol that got me thinking about this some years back , the 9mm Australian Automatic Arms SAP 9mm.
What do y’all think? AR15 magwell adapter, Slightly modified. (Shown with my long neglected square tube prototype)
3D printed prototype bolt that uses an Uzi extractor and retaining pin.
Trunion design that has the barrel entering from the rear and utilizing a press fit. Although there would be room to fit a cross pin if needed.
What I am thinking it would look like. Maybe a DOE style hang guard retainer and front sight?
Got a 9mm barrel blank from Green Mountain and a chamber reamer from MidwayUSA.
Still have some work to do on the bolt design as I discovered it would not lock the hammer onto the disconnector. I really love being able to print some stuff and test fit it before making stuff out of metal.
Project 2? Selling some stuff to finance all these projects.
I have a very limited supply of Sterling 20 round steel mags for sale. $120 each shipped with tracking. PayPal gladly excepted if you kick in a bit to cover the fees.
Other spare parts as well, just ask for my price list.
Shoot me an email through the contact form if you are interested.