AR-15 BS Thread

First lower build was a success, a little stressful though. Had one detent go flying, but luckily I found it...

 

Cool trick that I'm sure has been discussed here, get a dowel rod that fits in the takedown pin hole, drill a hole in it that the detent and spring will fit through. Use your punch to compress both and rotate the rod a quarter turn then just simply push rod through with the take down pin. Will save a lot of time trying to find the spring and detent after they go flying...

https://m.youtube.com/watch?v=XJNaTjvQaVQ

 

Thanks! Yeah I used the old needle nose and razor blade method. This looks much easier. I need to get a set of roll pin punches too ...

 

Those of you that have built an upper or done anything that requires changing the barrel nut, have you used a standard upper vise block or purchased something different like a geiselle reaction rod or magpul bev block?

 

When I built my upper I didn't have a vice so I mad a jig out of 2x4's and screwed it to the deck railing, worked great and was free because it was made from scraps.

 

This is the newer version of what I have. Mine just didn't have the channel for the top of the receiver I just used the jaw protector. This setup is nice because it has the lower bock too. Use it for mounting your buffer tube. Can use the upper block with it uprite for cleaning or the rail install etc,
http://www.ebay.com/itm/ARmores-223...559622?hash=item257aa712c6:g:N10AAOSw7NNUKXNT

 

Can someone recommend a decent armorers wrench. Not looking to build a lot, just have it for maintenance reasons

 

I don't do any delta ring aka clamshell stuff.
But as far as flat top/free float rail stuff goes I really like this NC star, I like that it has 3 prongs on the buffer tube & barrel nut spots. I screwed some stuff up w my dpms wrench.
http://www.ebay.com/itm/NcStar-Mode...477893?hash=item1a0e902705:g:k2oAAOSwKtVWy32Q

 

thanks, Amazon has a 2nd gen one, will prob go that route

 

I mean it has a tactical bottle opener gotta get that

 

Finished my build Friday



Already looking into red dots and Drop in rails, haven't even shot the damn thing yet

 

I'd probably poke my eye out but I want one of these.

 

went with SSA's in both new builds!

 

Next question. Buddy ordered a free float for me to put on his rifle. It came with 0 instructions. It has a couple thin metal washers/shims in one of the parts bags. Obviously they are for the barrel nut, but should I use all of them or are they for some type of small adjustment to get things to line up so use as needed or what?

 

Round tube or does it have a rail on top?
If it has the rail on top it's probably to get the handguard to line up to the upper correctly.

 

It has a rail on top. The one I put on mine did as well, and it included the same pieces, I put 2 out of the 3 or 4 mine came with on and everything seemed fine so I didn't know if I got lucky on it or what their intended purpose is. I don't like to guess when I'm working on someone else's rifle lol

 

Question for you guys...

Just finished putting together my third AR. During the first range session, I noticed all of my brass was making a nice neat pile at the 1 o'clock position. My other two throw their brass to the 4 o'clock position. Don't know if this is an issue or not. Bolt holds open every time on an empty mag and the gun runs without any problems. I'm running a SpringCo blue spring with A Spikes Tactical ST-T2 buffer. What say you?

 

If it's reliable/consistent I wouldn't worry about it.

Put a magpul K2 grip on my AR pistol in prep for the tax stamp, much better than the MOE grip angle for the short system.

 

Anyone else in here have a 7.62x39 AR? Mine is being a pain in the ass