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Ar bolt together changes
Weaponeer Forums : Blueprints and Drawings

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  joezx10r

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Posted: February 09 2010 at 8:40pm | IP Logged Quote joezx10r

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  joezx10r

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Posted: February 09 2010 at 8:45pm | IP Logged Quote joezx10r

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  dcorb

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Posted: February 09 2010 at 9:04pm | IP Logged Quote dcorb

I like the looks of it. I would like to do a 9mm version someday.
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  blurrededge

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Posted: February 10 2010 at 9:13am | IP Logged Quote blurrededge

Wow, looks much cleaner than version 1. Great job!
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  hawcer

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Posted: February 10 2010 at 9:28am | IP Logged Quote hawcer

Very nice!
I had a similar idea once, but was thinking of making the buffer mount and the handgrip section all one piece.
You even angled off the magwell, as I had planned. Looks good!

Make a kit, I'll buy one... [IMG]smileys/smiley2.gif" />
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  kanton

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Posted: March 27 2010 at 5:32pm | IP Logged Quote kanton

Excellent work!

Could you post plans for an AR10 version?

While I am begging 9mm and 45 caliber would be nice too!
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  gundoctor

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Posted: March 28 2010 at 1:40am | IP Logged Quote gundoctor

very nice work.

Could you mill it in only three pieces? 2 sides and the rear/buffer tube mount?
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  joezx10r

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Posted: March 28 2010 at 11:44am | IP Logged Quote joezx10r

gundoctor wrote:
very nice work.

Could you mill it in only three pieces? 2 sides and the rear/buffer tube mount?
Sure U can do it however you want. It just makes it more likely to scrap a more complacated part than a smaller easier to remake part.
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  wdoyle1980

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Posted: August 18 2011 at 10:51pm | IP Logged Quote wdoyle1980

hawcer wrote:
Very nice!

Make a kit, I'll buy one...


Any kits coming down the pike?
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  86barettaguy

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Posted: January 19 2013 at 3:45pm | IP Logged Quote 86barettaguy

It's a nice idea this.
Has it been tested and proven to work? Seems like a good alternative to the holmes receiver.

Once bolted together and test-fitted and all, I'd consider welding the pieces together to avoid being surprised by loose bolts

Kanton: you might want to check out bill holmes AR15 book detailing his 9mm conversion
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  snocat_trf

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Posted: April 27 2014 at 6:05pm | IP Logged Quote snocat_trf

what about doing a group build where each person makes like 1 part and everyone sends the part to the other guys so they can build their lowers without having to make all the pieces?
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  backbencher

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Posted: April 27 2014 at 11:11pm | IP Logged Quote backbencher

snocat, that sounds like a rather outstanding first post.  The sideplates FCS holes will probably still have to be drilled by the final maker.

Wonder how much of this kit could be drilled instead of welded?

http://www.theflatspot.net/ar-15-receiver-flat.html
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  snocat_trf

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Posted: April 28 2014 at 9:29am | IP Logged Quote snocat_trf

Are the dxf or iges files available for this bolt together lower?


I do have a CNC machining center in my garage and can probably make the most difficult parts. I am guessing I'm not the only one with one of these but it keeps me sane getting to cut metal.
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  backbencher

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Posted: April 28 2014 at 11:15am | IP Logged Quote backbencher

Looks like all that is available is the .PDF.

You'd want to cut one out, drill all the holes but the 6 FCS holes, & send it off as flats to Tech Branch & get a non-firearm determination letter.  If they won't give you one for that, then progressively subtract parts (and put them in another batch) until you have two - or three - or four, etc non-firearm determination letters.

If you get a non-firearm letter for the whole kit, then you can produce the whole thing, charge for material, labor, & wear on your equipment, & sell kits.  If you have to break it down into separate kits, then you have to form a co-operative, as you proposed.

The Flat Spot has not bothered to get a Tech Branch letter, but theirs requires welding, whereas yours would just screw together.  BATFE might give you a non-firearm letter for the whole kit w/ the screw holes drilled, or they might tell you you've produced a firearm, even w/o the FCS holes drilled.

If you have to form a co-op, then the organization as a whole can make no money, cannot pay its members directly, and be strictly voluntary.  Nor can you take orders centrally, or you'll have created a distributed firearms manufacturer.
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  snocat_trf

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Posted: April 28 2014 at 11:46am | IP Logged Quote snocat_trf

I already noticed four missed dimensions on the grip mount mod.

I might have to recreate this in pro-e and round a few things off.

Maybe even work on a 10 instead of a 15
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  UKBiker

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Posted: April 28 2014 at 6:10pm | IP Logged Quote UKBiker

I like the look of that, it's a lovely simple design.
I wonder if with a little jiggling of the design it looks like it would be possible to make it so that it all dovetails together without the need for any screws?

Next question would be a simply designed upper for those places where uppers aren't easily available, how feasible would a bolt together upper be to do?
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  backbencher

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Posted: April 28 2014 at 6:39pm | IP Logged Quote backbencher

I think - keep in mind I'm an Agro-American - that the AR upper, which is primarily composed of a rectangular channel for the charging handle, & a 2/3 tube for the bolt - could be made out of rectangular channels.

IE, one open bottomed box for the charging handle/gas key and a mostly square box for the bolt, with an open hole on each end for the bbl extension & the bolt to slide through.  The tricky bits would be threading for the bbl nut and getting the take down pin lugs secured.  If you welded it together, you might be able to make it out of a flat, and weld in a boss between the two sides to make the lugs.

However, you have several AR manufacturers in the UK making straight pull bolt actions, so you shouldn't have any trouble getting hold of an upper.
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  northumbrian

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Posted: April 29 2014 at 6:00am | IP Logged Quote northumbrian

I found a supplier of 3" Aluminium tube, with a wall thickess of 1", which gives a prebored 1" dia bore.
So all you'd need to do is machine the external faces.
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  snocat_trf

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Posted: April 29 2014 at 6:04am | IP Logged Quote snocat_trf

and the name and contact info of the supplier is......?????

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  backbencher

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Posted: April 29 2014 at 10:55am | IP Logged Quote backbencher

snocat, it'll be a UK supplier.  north's in France & Biker is in the UK.  Biker operates under restrictions that make California, NY, & Connecticut look like paradise.
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