Albroswift

Good stuff, Thanks! Al

Something I hadn't considered, but perfect. I assume you have one, what velocities are you getting? Barrel length? Gas system length?

Want to build something for Western Washington Blacktail on an AR15 receiver set. Regulations here min .24 caliber. Too many options, maybe 6.5 Grendel, 6.8 SPC, 6mm/.243? Don't want to go 7.62 Give me some ideas my friends!

It looks like the ejector roll pin in the 308 bcg is longer then the one in the ar15, but I don't have one that isn't already installed to compare, only a couple spares for the ar15.

Speaking of parts, what is the roll pin size for the ejector? I was installing the KAK rounded ejector and didn't measure the one I removed/ replaced, but the way things get bent or go flying some times it may be good to have a spare. Do we have a list of all the roll pin sizes somewhere around here?

Yes, Aero is good about that. Not Aero upper and lower, just the parts kits. AMT 80% lower and their stripped upper. Used AMT on the last build, no complaints.

I guess I could take the time to read the description of what I am ordering or look at the pictures, although they don't always agree... On the lower kit they say "Bolt Catch Roll Pin ans show a picture of a roll pin, on the upper kit they say a "Forward Assist Roll Pin" but show picture of set screw. Includes: Magpul MOE® Grip in Black or FDE *M5 (.308) Takedown Pin *M5 (.308) Pivot Pin Takedown/Pivot Detent Takedown/Pivot Spring *M5 (.308) Bolt Catch Bolt Catch Buffer Bolt Catch Roll Pin Bolt Catch Spring *Extended Magazine Catch Button Magazine Catch Body Magazine Catch Spring Buffer Retainer Buffer Retainer Spring Safety Selector Safety Selector Spring Safety Selector Detent 4-40 Set Screw (for threaded takedown pin detent hole) Trigger Hammer Trigger Spring Trigger/Hammer Pins Hammer Spring Disconnector Disconnector Spring Our upper parts kit includes the parts you need to assemble your M5 (.308) Upper Receiver. Includes: Forward Assist Assembly Forward Assist Spring Forward Assist Roll Pin Ejection Port Cover Door Ejection Port Cover Rod Ejection Port Cover Spring Fortunately my upper takes a roll pin and lower takes a set screw so I needed one of each anyway.

That makes sense, except: They gave me a forward assist sized roll pin in the LPK but no BC set screw.

Went with the Aero kits on most recent build, AR308 UPK and M5 MOE lower kit, When building the bottom end there was no set screw for the bolt catch, but there was an extra roll pin. Has an extra screw in the parts bin, finished up the lower, started on the upper, low and behold, screw for the BC was in that package but the roll pin for the forward assist was missing. So they include the FA roll pin in the LPK and the screw for the BC in the UPK. That only works if you buy both kits, otherwise there would be some cussing.

Copy that. It'll be on the bench for a little while, getting out for some hunting. Dragging the trailer down to camp this weekend.

Correct. I'm using the armalite carbine extension kit, so buffer is 5.4 oz as well.

gracias

Going back and forth from messaging Concretus and this thread, he was running rifle length extension tube, 308 rifle buffer, tubbs 308 spring, superlative adjustable gas block.

I searched gas port thread, got 100 pages of everything but that. Like to check it out, point me in the right direction?

it reportedly cycled several different types of ammo both factory and reloads. Don't know what spring/ buffer combo. We are going with an adjustable block anyway and the armalite extension/ spring/ buffer so I'm thinking just go to .080 diameter to start and do my adjusting without several trips between the drill press and the range. That drill press part is stressful! Hunting season starting so probably won't be going to the range for a while.

1:8 18"

18" BA, the one I bought from Concretus a couple of months back.

Going to town on the 6.5 Creedmoor build, checked the gas port, .062 no go .059 go. .875 journal. Mid length gas. Is that the correct port size? Seems small, but nothing to compare to. Interesting factoid, the BA barrel uses the 11-3/4" tube, not the 12-1/16. Assembled with 12-1/16"tube, visually way past center of cam cutout, and confirmed bolt will not close. Didn't have a 11-3/4"" laying around.

.0995, wasn't it? So what I am hearing we may have a good running 308 with a 7" extension and a 2.5" buffer. Kind of where I wanted to go with my next 12-1/2" pistol build using the Tailhook Mod 2 brace.

Do a lot of grinding and stuffing, beer brats, summer sausage, breakfast sausage, chorizo, landjagger, lean beef burger and bacon burgers-- 15 lbs lean beef trimmings, 5 lbs of bacon, grind together and run through the patty press. Freeze in pairs, quick and tasty on the Weber.

Tuna, Pepper Jelly, some wild meat, few other odds and ends. Seems like the lids are costing more and more every year. Never thought of taking pictures!

Uber and Taxi drivers. Not kidding.

R Lee Ermey! What is your major malfunction?

Didn't like the look/ feel/ weight of the ebay hand guard on the sig pistol build, replaced it with a M-lock from AR15handguard.com. Sent me a high profile first but very good customer service, had a return label within a few hrs of reporting the issue, had the correct one back to me a few days later. Good communication. Anyway, got it on tonight, and one of the holes lines up perfectly with the gas block adjustment screw. (The lucky part)

R Lee Emery!