What 3D Printer Do I Use?

18/07/12 at 10.08am   /   by BigRix   /   1 Comment

I’ve had several people email me asking what 3D printer I am using.

The Monoprice Select Plus has served me very well over the last few months. I have done very little to modify it other than to add a different type of spool holder. I am providing an Amazon link below if any one is interested in picking one up themselves.

Monoprice Select Plus

I have the final version of the AR180S pistol grips design ready to go and hope to get a few printed off this weekend. Each one takes about 15 hours to print so it will be awhile before I have them ready to sell. My plan is to get a small batch together then put up a for sale post. I don’t want to take money ahead of time or put together a waiting list. I think this will work out best for all parties involved.

Make sure you are subscribed so you get notified when they go up for sale.

 

Modern AR-180?

18/07/06 at 10.37am   /   by BigRix   /   4 Comments

I as well as many others have pondered what the AR-180 would have become if it had the same development as the AR-15.

I think I may have found the answer.

The Remington/Bushmaster ACR Advanced Combat Rifle

Designed by MagPul and named the Masada the rights were sold to, and the civilian version is made by Bushmaster.

I snapped a few pics before I left town but it has many features that are directly decedent from the 180.

Look familiar?

More pics to come and I hope to get them both to the range to compare them side by side.

Upper Flat On Gunbroker

18/07/04 at 7.36am   /   by BigRix   /   3 Comments

I just have not had the time to work out a bending method for the Upper Flats that I have so I have decided to put one on Gunbroker. Lets see if one of you can come up with something.

These were designed and built by Chuck at GunLab.net and match the dimensions of the factory built guns as far as I have been able to determine.

Upper Flat

Why Finish One Project When You Can Start Two More

18/06/30 at 1.22pm   /   by BigRix   /   4 Comments

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.

 

Reader Build: Cam Pin

18/06/16 at 3.01pm   /   by BigRix   /   5 Comments

When I was first contacted by reader Mike I didn’t think a cam pin for a 180 could be fashioned from an AR15 part. I was wrong. Here is what Mike did to build his own “Fully Operational Cam Pin”. (Thinly veiled Star Wars reference)

Like any good home builder he took some measurements and made a drawing.

AR-180 Bolt Cam Pin

Then commenced to cutting metal. Anything from hand tools to machine tools would certainly work. Dealers choice.

Great work Mike!