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I had my first ever slamfire at the range today with my AR15.
I just put a new light bcg in last week and it ran fine for a few magazines. I reused the old bolt though since it was broken in with this barrel already. Not a high round count gun but I know I have at least a thousand rounds through it. I also made sure to clean and lube it well after changing parts.
I was finding my new gas setting because I emptied the buffer and I usually load one round in the magazine at a time to do this.
The bolt was locked back with safety on. I had it pointed down range and without touching the trigger when I used the bolt release to chamber the round the gun fired. I'm also using the standard milspec spring and am waiting for a reduced power one. I've got a CMC single stage drop in trigger.
What are some things I can look for to try and diagnose this?
I've already tried banging the stock on the coffee table to see if the hammer falls to no avail. I did a funxtion check without the upper on and nothing jumped out at me. Just to be extra sure I cleaned out the firing pin channel again.
I was using armscor 223.
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>>64970981
Slamfire into your skull next time
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>>64970981
Never heard anything about Armscor but ARs do dimple the primer when you close the bolt on any 5.56. Is it possible that you somehow got a fucked up lot of ammo with soft primers instead of harder/military primers?
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>>64971012
>seething
>>64971027
armscor is pretty cheap but I've never had an issue with it before. I suppose it is possible, I didn't think to look for the casing at the time.
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>>64971027
They can't be soft enough to just go off like that unless there's something out of spec in the gun
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>>64970981
>i emptied the buffer
Last time I checked, the buffer assembly is the tube stock, piston, and spring. You're full of shit.

If your weapon fired by simply chambering a round, your weapon is a piece of shit that you probably "built" out of garbage parts.
>banging the stock on the coffee table
Sounds about right. You are a dumbass who should be arrested for being too stupid for having weapons.
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>>64971109
Where did I say buffer assembly?
>last time I checked
aka
>a minute ago when I googled AR buffer
>tube stock
>piston
who even uses this nomenclature when talking about a gas operated AR you dumb brown third world nogunz retarded faggot kek.
post a single gun that you own lmao (you won't)
>>
>>64971190
different anon.

ok so let's sum this up
>I'm running ultralight everything on stock spring
>I even made the buffer weight just a plastic case
>why did my gun go blam when it shouldn't?
Well it should have, and did, because you fucked everything up.

don't come here and blogpost about how stupid you are, use the internet and read about how an AR type system works.
Nobody here should suffer wasting their time trying to explain it to you.
>>
>>64970981
its ok anon, slamfires are a normal part of gun ownership
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>>64970981
No buffer weight and a light BCG means it went into battery way faster than designed. Floating firing pin impacted the primer harder than normal. Bang! Might want to look into a titanium firing pin if you continue to test with the same methods again.
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>>64971213
>different anon
kek
>you fucked everything up
like what?
>use the internet bro
>no not the image board specifically about weapons
>trying to explain it to you
If you can't because you don't own any guns and have never touched one just say so.
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>>64971243
Thank you, that makes sense. My reduced spring should help too then so the bolt is returned with less force.
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>>64971258
You are a waste of breath.
>>
>>64971301
>still hasn't posted gun
>still impotently seething
>>
>>64971363
You don't even have the wherewithall to fucking read about your own self induced problems, you're a waste of breath.

>oh no I'm getting called out and it makes sense and he's making me feel self conscious and shame
>better use the meme insults!
Bro every mistake you made is in your own posts for the hundreds or thousands of people who browse /k/.
You are fucking dumb.
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>>64971372
>gets outted as nogunz for not knowing what a buffer is
>can't back anything up beyond parroting kneejerk vague "user problem" at attempt to fit in
>you're a waste of breath
>keeps replying anyway
Absolutely starving for (You)s
>>
>>64971449
Ok retard.
>>
>>64970981
>I had my first ever slamfire at the range today with my AR15.
No you didn't. Post bolt carrier group disassembled.
>>
If it only happened this one time over >1k rounds I wouldn't worry too much about it. Slamfires can happen due to a faulty primer.

But just to be safe make sure the bolt face is clean and dry (there should be absolutely no residue of oil, dirt or any fluid on the bolt face or in the firing pin channel. Verify the firing fin is free floating (wiggle the bolt, you should hear it). And make sure the firing pin tip is not damaged.
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>>64973303
>>64973364
So the inside of the bolt shouldn't be lubed then? I typically clean my guns after every other range trip but I'll take another look. The pin moves pretty freely. Can the oil on the bolt lugs migrate to the bolt face?
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>>64973449
One. Get a new bolt carrier. That one is shit and I'd bet it's out of spec
Two. I don't know what retard anon is on about but I've shot colts mil issue m16a2, M4, colt ar15s, custom ar15s, budget built at 15s. Every one of them I've run sloppy with oil with zero issues. Get it wet wipe it down with an oily rag and run it.
>>
>>64970981
Ah well yearh you modified the gun. Ya know. Thus keep loaded guns pointed downrange at all times and keep you chamber clear and mag dropped if you are not ready to shoot

Also for all you handloaders with bolt actions, remember to give ammo time to cook off on a misfire before you cycle the bolt
>>
>>64973449
Your parts should be sloppy but not dripping with oil. Having too much oil is actually counterproductive because it will collect dirt and increase friction instead of reducing it. In extreme cases residue building can cause the firing pin to lock in forward and cause slamfires. But by the looks of it it's probably not your case.

Again, it's very difficult to diagnose because it only happened once and there is really no way to tell if it's due to a firing pin issue, BCG issue or ammo issue. I would change nothing and see if it happens again, if so then the BCG is probably the issue. Since you did not change the bolt, I see no reason for the headspace to change, it may be the increased velocity because your new carrier is lighter.

Did you check headspace ?
>>
>>64973548
I typically run my ars wet like bass pussy and they always ran fine like that. I could see how it getting in the firing pin channel could potentially be an issue though.
What way would you suspect it's out of spec? I'm just curious.
>>64973559
Yes I'm aware modifying the gun can lead to issues, you don't really learn too well how things work when you just sit on the computer and read things all day or keep everything factory.
That's why hayne's manual quarterbacks are typically contained to car video comment sections for example.
>>64973590
I'm thinking increased velocity as well. Significantly less mass on the same spring rate with a free floating pin. I didn't think headspace could be a factor when using the same bolt unless maybe it's sitting at a different depth due to differences in the carrier. I don't know if that's a thing or not. To answer your question though I haven't checked headspace.
>>
>>64973752
Important question : when the gun slamfired, was the hammer released ? If yes then your trigger group has an issue.
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>>64973975
I can't recall but the safety was still on and I want to say the hammer didn't fall because the selector was still all the way on safe.
>>
>>64973752
your empty buffers and bcg is so light its acting like a striker.
why the fuck did you think it was acceptable to empty a buffer?
>>
>broken in with this barrel
As an armorer of ten years this hurts my frontal lobe and made me stop reading immediately

Slamfire into your head next time and save me the trouble
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>>64974024
>it's ackshually le heckin extension
>I'm an armorer
>impotent seething
I can smell you from here.
>>
>>64973998
Why would I need to retain the same weight to move a lighter carrier? Is this the part where you mention bolt bounce?
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>>64974086
Are you retarded? Why do you think the buffer weight is what pushes the carrier?
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>>64970981
nigga u eatin... THREE slices of cake?
>>
>>64974078
Take a good whiff, that's what not being retarded smells like

Again, just take your own life and save the rest of us the time and the breath you are wasting oxygen the rest of us could be breathing
>>
>>64974086
Nta but what do you think the buffer weight is for?
>>
>>64974144
>>64974184
Probably to maintain the inertia and kinetic energy required to chamber the next round after the potential energy in the spring has been depleted to move the carrier. I might be wrong though, I need a big brained ten year strong e-armorer to tell me why I need a boulder to move a pebble for a gun I use for fun.
>>64974158
Instead of getting this angry and bitter because nobody takes you seriously, perhaps you should just step back and take a breath. Don't worry I'll shoot my guns again and make another thread so you can drop by and get laughed at in that one too.
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>>64974238
You argumentatively fight back on people like you have something personal to prove,
The reality is there is an obvious problem caused by what you stated from off rip.

Grow up or shoot yourself in the head, I don't care which.
Real life isn't your coddled everybody-happy-time ultra pozzed PC school babysitting bullshit. Get over it, fix the problem everybody is saying you caused, or fucking kill yourself with your own rifle. I don't care whichm
>>
>>64974238
Wow everything you said was wrong
>>
You're all sick people.
I hope you all get cancer. Fuck youse all.
I put a curse upon you all.
Fuck ya
mudda
>>
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>>64974269
>nooo I'm allowed to be an insufferable faggot for no reason and you gotta play along with my larp
Stopped reading after that. You can get fucked. I'll see you in the next thread I make after shooting some pop cans or something.
>>
At friends apartment at college. Just bought my first pistol from a gun show (I was 18) Drinking with friends Show them my new Sig P320 ND into celling Upstairs neighbors too high and drunk (underage and illegal drugs) to call the police.

Second time
>At range Showing friend pistol Think gun is unloaded Point at ground show him how to wrack and pull the trigger. Forgot loaded mag in Shoot between his feet

Third time
>At parents house. Just bought another P320 from a guy Get home Try swapping slides with another sig I had Forgot the other sig slide was chambered. Pull trigger Shoot parents wall

Fourth time
>At my new house Playing with a friend's P320 Legion Release wlide Slam fires round into ground

Fifth time
>Showing a friend how to use it No idea how but a round got chambered Show him how the trigger works, Pull trigger Shoots round into floor in the same place as before

Sixth time
>Thought maybe the house was haunted Grab a sig Physically clear it, (racked the slide 3 times) with no magazine in pull trigger at the same hole
Round goes off

Seventh time
>Friend brings over a used P320 wants me to look over it I grab it and pull the trigger without clearing it Didn't even realize the thing was loaded.

Eighth time
>Friend brings over his police trade in 320 He's showing it off to me I put a loaded mag it and decided to try and release the slide Pulled the trigger for some reason a round into my wall

Overall you shouldn't feel too bad about NDs. It's part of owning guns, and you should get used to them.
>>
>>64974285
>doesn't elaborate
>still hasn't posted gun
opinion discarded
>>
>>64970981
>I just put a new light bcg in
>gas setting
>I emptied the buffer
>reduced power spring
for what purpose?
what are you doing to this poor ar15
>>
>>64971012
Don't be jealous of OP's slamfire anon
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>>64974308
Buddy there's like 7 or 8 different people who have said to point it at your skull. I'm trying to be nice by explaining to you why.

I'm probably only 1 of two or three people who have cared enough to give you more than one reply.
Welcome to the internet.
https://youtu.be/k1BneeJTDcU
>>
Slamfires are just part of using a firearm. If you aren't getting slamfires, you're not shooting enough.
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>>64974516
He's just trying to avoid buying a good muzzle brake
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>>64971213
>made the buffer weight just a plastic case
You've never touched one before have you.
Post any gun with timestamp.
>>
>>64974715
There's one person and it's you.
Post a timestamp gun picture, anything at all.
>>
>still sperging out
Hoes mad. Hoes mad!
https://youtu.be/vuRNoBOkDzY
>>
>>64974950
why
even if somebody posted a gun you wont listen.
multiple people have called you retarded and explained what happened and you double down. you should have asked elsewhere if you werent prepared to be called out on your self inflicted idiocy.
>>
>>64970981
>Five cakes
Care to share the recipes?
>>
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>imagine thinking there us such a thing as "breaking in" guns
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>>64971234
>slamfires are a normal part of gun ownership
It has already been posted. Good.
>>
>>64975966
If you buy brand new yes, doesnt matter for any used guns that have gone through some rounds.



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