TM 80% build
The lower was completed with my Atlas drill press and Atlas lathe milling attachment.
The TM jig was handy to hold the receiver and to drill the FCG pins, didn't use the top plates except for the trigger hole.
For the FCG pocket I used measurements and did layout on the receiver as shown in a sticky posted on Weapons Guild.
Been looking on line for a HBAR 16" 1-9 twist chrome lined mid length upper for a while without much luck,
everyone seemed to be sold out.
But, went to a Gun show yesterday and found a decent deal on a complete upper with bolt, carrier and also a Bushmaster lower parts kit.
Total cost, not counting the jig was right at $600.
Build time was around 4 hrs,.....been awhile since I've messed with the AR platform http://www.weaponsguild.com/forum/Sm...fault/grin.gif
According to the foundry stamp...The upper is.....box= BrassAluma Forge (mainly for Colt)
Gonna wait to finish the lower till I put some rounds through it next weekend.
Looks good. Ive been wanting to attempt this, i only have a drill press and a dremel though. Not sure if i have the skill with the DP to do it!
I was a little nervous about doing one myself, but it went pretty smooth.
They can be done without the jig
with a decent drill press, just gotta take your time.
Along with the drill press, you will need a 5/32", 1/2", 3/8" drill bits and a 3/8" aluminum burr bit or milling bit, a vise and caliper.
There are several good threads, PDF files available showing layout measurements, how to make a FCG pin template and the step by step process.
Thanks Shooter, Where did you get your 80% from? Tactical Machining? Ive seen a few places that sell 80% receivers. been looking! Going to have to find one and hit up my local harbor freight i guess, since you've talked me into it.
Yes it is a TM 80% lower.
Mine was the older version that had the pre drilled selector hole.
The fit and dimension accuracy of the TM lowers matches or exceeds some of the big name AR manufactures.
Let me know if you need any build info links.
i may start making my own lowers from some of these 80% jobs again.
they look ideal to do that retro no fence A! replica i keep dreaming about--LOL
very easy with a drill press, hand files and dremel, there are few tutorials on the web dutigaf has one on WG,( it may be posted on here if you look in the old threads he did last year. I did a 0% DSA forged lower with drill press, hand drill dremel and hand files, very easy to do helps to have micrometer and a 100% recieveror blueprint (which are free on the net) or a old tannery casting as they were opened up in the fcg area
Originally Posted by Mr_Posthumous
you don't need jigs or templetes, just the blueprints and the time, then for anodizing there are a million tutorials on that
set your mind to it you can do it, these TM 80% are a piece of cake once you have done one you could do ten
Originally Posted by Sprat1
Can you point me to one or two of those anodizing tutorials? I am have issues...
I went to the website, very interesting. Might have to give it a try. Here's the link- 80% AR-15 Lower Receiver
What type of finish would be best?