Just a funny way of saying blew his brains out and fell over and didn't move ever again??
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Ar build
- Thread starter Weldabeast
- Start date
The gun guy said if bear creek leaves me hanging he could convert me over to 300bo for 200 bucks out the door.... But I already got a hundred yard and in gun with my 30-30. I guess the grendal is the next option if I end up having to buy another upper. Can I convert my 350 upper to 6.5 for anywhere close to 200 bucks?
Skunkworkx
Well-Known Member
My home built AR 5.56 80% had issues feeding...I did a bunch of reading, youtube, websites...
I found that the buffer was too light and feeding too fast. I changed the weight some slightly...no more issues and well over 1000 Rds.
The one that pointed out what my issue was showed why the empty shell ejected the direction it did. (like below)
The Heavyweight Guide to AR15 Buffer Weights (refactortactical.com)
I found that the buffer was too light and feeding too fast. I changed the weight some slightly...no more issues and well over 1000 Rds.
The one that pointed out what my issue was showed why the empty shell ejected the direction it did. (like below)
The Heavyweight Guide to AR15 Buffer Weights (refactortactical.com)
He swapped out all the different weight springs except the heaviest spring which he didn't have on hand to try
Hum. Am I gonna want to change this for the 450BM? The gun came built for a 5.56.
Iron_llama
Well-Known Member
You can always post it as-is on an auction sitr. Good call on the buffer spring and weight. Maybe someone nearby can put it on a different lower and see if anything changes.
I seem to recall a Bear Creek upper short-cycling. Turned out the gas block wasn't secured adequately and was walking towards the muzzle. Nudged it back into place and replaced the cup screws. This could explain the problem started and getting worse over time.
I seem to recall a Bear Creek upper short-cycling. Turned out the gas block wasn't secured adequately and was walking towards the muzzle. Nudged it back into place and replaced the cup screws. This could explain the problem started and getting worse over time.
He checked the gas system first and it is all in working order. He said he put my upper on multiple lowers while trying to figure it out also.
Skunkworkx
Well-Known Member
So, your upper on multiple lowers and same issue ?
BCG hanging up ?
Burr on BCG ejector ?
Tried a different BCG ?
Hard to say... but if a gun smith didn't see anything, I'm a bit lost.
BCG hanging up ?
Burr on BCG ejector ?
Tried a different BCG ?
Hard to say... but if a gun smith didn't see anything, I'm a bit lost.
Skunkworkx
Well-Known Member
You can get different springs I believe, but the buffer weights make a big difference.
Can you weigh your buffer ?
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Iron_llama
Well-Known Member
H2 buffers seem standard but other weights are available. I don't have one in front of me but isn't there a roll pin holding on the synthetic bumper? And tungsten weights? I might be remembering discussions about swapping out buffer weights on hi-power rifles.
I have no idea what u guys are talking about
Iron_llama
Well-Known Member
H2 is the designation for a heavier carbine buffer.
AR-15 Buffer Weights: Difference Is, and How to Choose
While AR-15 buffer weights are often overlooked in an 80% build, choosing the right one is important for your rifle's performance. Find out more at 80 Percent Arms!
www.80percentarms.com
@Weldabeast, @Skunkworkx says if your ejections are at the wrong angle, your buffer isn't it the right size. 
that video he posted is some good info. This AR thing isn't as simple as I thought. Should have just got a bolt action...
that video he posted is some good info. This AR thing isn't as simple as I thought. Should have just got a bolt action...
Yeah....stuff I don't really care to want to learn about. I'll hire this problem done.
Skunkworkx
Well-Known Member
I built my own starting with an 80% Poly lower...Learned A LOT.
Never make a gun smith, but between building my own, joined an AR forum with lots of questions I asked, Youtube, and such...soaked it all in.
Really a simple platform when you look at it.
Never make a gun smith, but between building my own, joined an AR forum with lots of questions I asked, Youtube, and such...soaked it all in.
Really a simple platform when you look at it.
The_Fit_Ness_Monster
Well-Known Member
Check your head space I’d bet money it’s either that or the star chamber that’s the only things that can affect failure to feed (mostly) The fact he was messing with the gas tube for FTF I would say he doesn’t know jack. Bc even if it was under gassed it wouldn’t do what you’re saying in that manner. If that doesn’t work, send it to School of the American Rifle, he’s a literal guru with ARs and the tools he has for the special testing he does you can only get by going through his class. I’ve never known anyone with more actual knowledge of the AR than that guy. Also have you tried different ammo brand? And what kind of mags do you use? Not completely sure about 450 but it shouldn’t be toooo much different than 5.56 at base functions.and if the BCG is in question just get a FailZero or ToolCraft and call it day.
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Again....I have no idea what u talking about.
As far as the gun dude not knowing what he's talking about....u are mistaken.
AR slings in the saddle. What works what doesn't?? Will need something. Best way to raise and lower weapon. What do I need?? I have nothing ATM to work with.