Looking for chamber & fcg blueprints [Archive]

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TheFalconeer

10-23-18, 11:33

I am searching for the chamber blueprints of the A2 rifle or carbine... As long it's the m855 chamber. I have a copy of the a1 barrel chamber but I need a copy of the newest for a study and testing.

I am also looking for a copy of the a1 disco and trigger.

Got some L1A1 blueprints if interested by a trade of m16 blueprints. Barrel, bolt, carrier,... Even receivers.

jsbhike

10-23-18, 13:30

Not sure how you got the L1A1 drawings, but (going off memory here) there was a guy from Australia named Pat Jones who relocated to Idaho and started importing FAL/L1A1 parts. As the supply of barrels began to dwindle he had also acquired drawings for L1A1 barrels (not sure on other parts) and got quotes from barrel makers off those drawings, but after he had induced an error in a couple of dimensions. Not sure who snitched his info or just a freak coincidence, but another company came out with L1A1 barrels that upon delivery to builders didn't quite work right and allegedly the reason why was the dimensions were off the same as the induced error in the numbers. Something that might be good to research.

markm

10-23-18, 13:40

As long it's the m855 chamber.

I love that chamber.

TheFalconeer

10-23-18, 14:13

I got the drawings from the UK Pattern Room archives, back in time when they were not freaked out at the idea of infringing upon FN's patents.

I got the barrel, receiver, lower receiver, carrier & bolt and some other parts. Now, getting anything even remotely linked to FN from them is a big no-no.

They scanned the prints for a fee and sent me a big & heavy file. Measurements are clear and, being straight out of the Enfield archives, I take them as correct.

lysander

11-02-18, 20:47

https://www.scribd.com/doc/184607286/AR-15-M16-Blueprint-33-Pages

The chamber is basically the same as SAAMI .223 except for these dimensions:

https://qph.fs.quoracdn.net/main-qimg-73856a7a5b611cc07f4f6999ae6012ac-c

Partial - http://i13.photobucket.com/albums/a264/artweaker/prints/DSCN3076.jpg

You can email me all the L1A1 prints you have to my email address in my profile.