dpete

I'm waiting for the lower and gas block to arrive from Aero. They were supposed to be back in stock last week.

UPDATE!! I removed the extractor (had a devil of a time pushing it in enough to release the spring pressure on the pin) and found 2 o-rings around the spring. I put the BCG back into the upper and it quite easily slide into battery. Not as easily as my 5.56 and 300 Blackouts but easy enough to do it with one finger. I had the same devil of a time getting the extractor pin back in but all is back where it belongs now. What is the best way to remove the ejector retainer pin to prevent the plunger from flying off to who knows where when the pin comes free?

The dummy round is a hornady match 308 that I pulled, dumped the powder, deprimed and reseated to 2.700 I also tried a pulled, unfired Remington 308 case without a bullet. The only attempts to get it into battery have been pushing on the BCG with the base of my hand. The ton of pressure I spoke of is more than I can exert without causing pain. I'm not going to go bashing the BCG on to a block of wood or something like that to try to get it into battery just for the sake of doing it. The main reason I asked is my other 300 Blackout and 556 ARs push into battery with a bullet loaded with finger pressure but they also have 100s of rounds through them already. The anticipation and this waiting for the lower to arrive is getting me antsy to get this 308 done and I'm probably over thinking things.

Stripping off the extractor was the route I was thinking about.

1. Yes 2. Nothing but a dummy round so far. 3. I am using a dummy round. 4. There is a ton of pressure, so much so that I haven't been able to get the dummy round to chamber at all so no ejection yet, and the charging handle is installed.

As I wait for Aero Precision to get stripped .308 lowers back in stock I did some fiddling with the rest of the parts I have. The barrel is on the upper, and the BCG and charging handle are in place. With the chamber empty I can push the BCG into battery with 1 finger. It pops right in. If I put a dummy round into the chamber and pushed the BCG forward. No way would it go into battery! Now these are brand new parts, NO lube has been applied yet and since I don't have the lower yet I can't use the buffer spring to slam it home. Is it normal for the extractor and its spring to be so tight that it won't allow a BCG to go into battery by pushing it? I haven't tried taking the extractor off of the bolt yet to see what that does. I thought I would ask here first and get some advice from those way more knowledgable than I am concerning a .308 AR.

Some more parts came in today and since I am still waiting for the lower and gas block to complete things I took some weights of the pieces I have. The Aero parts are noted. Weights so far: Barrel = 2# 8oz Criterion 18.5" lightweight profile from Fulton Armory Brake and washer = 4oz Bully Brake from Overkill Customs here in WI Upper & barrel nut = 1# 3oz 1st part of Aero enhanced upper combo 15" keymod handguard = 9 oz 2nd part of Aero enhanced upper combo BCG = 1# 6oz Aero NiB Stock, spring, buffer, & RE = 1# 3oz Pistol grip = 3oz LPK = 4oz Aero 308 LPK Total of these parts = 6# 12oz Right now I can't remember if the charge handle was in the upper when I weighed it so the total might be a tad heavier by a few ounces. Even if the lower and gas block amount to 2# total I'll be looking at around 9# total for the bare rifle. Add in about 1 1/2# for scope, mount, sling, and swivel rings it will be pushing 11# or so I think. How close am I?

From the sound of those a .308 guage set will work. Now to see if a local gunsmith can do it once the rifle is finished.

For now I'm staying with the trigger in Aero's LPK. I've read reports its better than the usual milspec triggers in ARs, which I have gotten used to. I already have a Nikon 3X9X50 scope waiting for its new home to be finished. Hopefully I can get an answer on headspacing the bolt to the barrel.

Yes I know its missing a few pieces but at least I know the rest is on the way from Aero Precision. The heart of the rifle will be an Aero 308 lower, the M5E1 upper receiver/keymod handguard, their 308 NiB BCG, and 308 LPK. I hope to see the rest of the parts come in this next week. The barrel is the 18.5", .308 AR, Light Weight, 1X10 twist, chrome lined, match quality, by Criterion sold by Fulton Armory, with a Bully Brake from Overkill Customs on the end. 20 round Pmags and 5 round ASCs for hunting. I've been reading as much as I can find in preparation for building this rifle and after reading about checking headspace I have a question about checking it on this barrel. On Fulton Armory's site they call the chamber a hybrid. "Our Hybrid Match Chamber allows use of .308 Win & 7.62x51 mm NATO Calibers" http://www.fulton-armory.com/barrelfatitan185lwcm1x10750gasblockchrome-lined.aspx I know both .308 and 7.62 headspace guages exist. Which one would give an accurate indication of proper headspace? I only intend on using commecial brass/bullet handloads in it and not wanting to risk anything I thought I'de ask those with way more knowledge than I have.

I bought a new one.

PM sent FaRKle.

Sorry, the classifieds in other forums are usually combined. Now I know they aren't here.

As the title says, I am looking for a MOE milspec stock. Let me know what you have and how much. I can paypal or postal money order.

Got those covered. Thanks

Thanks for the info. The pieces for my build are starting to trickle in.

Wet I knew, thanks. Any factory ammo thats better than others?

I'm in the process of putting together a 308 AR using Aero Precision parts and a Criterion barrel from Fulton Armory. The barrel has already had about 200 rounds through it but the rest of the rifle is brand new never fired. What would you suggest to use for ammo for the first trip to the range for the initial function tests?

Are there any different tools required for a 308 build opposed to an AR15 build? Do the larger upper/lower receivers need different vice blocks, or other tools?