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Old June 15, 2018, 14:28   #1
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safety malfunction

Yep had a slam fire on a DSA SA5818CP-A

it was a stuck firing pin
it got fixed

THANKS

4X401 . . . . . your a peach !

Last edited by Scout10; June 16, 2018 at 19:59. Reason: to much info
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Old June 15, 2018, 14:32   #2
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Have you checked firing pin protrusion?

Using "hard" mil-spec primers?
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Old June 15, 2018, 14:34   #3
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Have you looked at the firing pin and/or firing pin spring? Broken firing pin could create that type of problem you've described.

Someone who knows more than me should be along shortly to offer insight.
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Old June 15, 2018, 14:48   #4
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Is the spring for the FP in the bolt? Did the hammer drop? If not then no issue with the selector. Not a real good idea to feed it from the breach although I've never had a slam fire doing it.
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Old June 15, 2018, 14:50   #5
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Broken firing pin

Excess firing pin protrusion

Firing pin spring missing / incorrect

High primer

Excess cartridge OAL length

Improperly sized cartridge case

Case length excessive

Single load from the magazine only


.........................


....................................
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Last edited by tdb59; June 15, 2018 at 15:19.
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Old June 15, 2018, 17:07   #6
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Originally Posted by tdb59 View Post
Single load from the magazine only.
^this^

There was a thread some years ago on this subject and the long and the short of it was: always feed from the magazine. I believe the reason had to do with bolt velocity being slightly reduced when the mag is used. Another caveat was to release the bolt by pulling back on the charging handle, not by using the bolt release.

It could be something else, but if you use ammo of a conventional overall length being fed from magazines and you don't have any more slam fires, then it had to do with breech loading the rounds (and/or stuck firing pin or weak spring, which shouldn't happen with brand new parts).

Good luck, and let us know how it turns out.
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Old June 15, 2018, 17:56   #7
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Quote:
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............ ammo is new, not surplus (first 20rds on 1st trip all fired, no issue)

Quote:
Originally Posted by Scout10 View Post
Didn't load via mag as the rounds had a polymer tip that made it toooo long.
............
Curious about this- what ammo, which mags ?


.................
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Old June 15, 2018, 18:27   #8
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Quote:
Originally Posted by tdb59 View Post
Curious about this- what ammo, which mags ?


.................
Hornady Custom Lite .308 125gr SST ( OAL 2.712 )
Mag . . what else . . . . DSA
It's the only one i have and only one that came with it.
(bought some Sir-plus, and they are on the way.
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Old June 15, 2018, 18:38   #9
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FOUND


Was thinking of sticking the pin in a drill, and use a sharpening stone to reduce OD, and not bother with DSA
sound good ?
I'd try cleaning the shiznits out of the inside of the bolt before I reduced its OD.
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Old June 15, 2018, 19:02   #10
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Why are you leaving the round 1/2 inch out of battery when closing the bolt? What you are likely doing is firing the round out of battery which is not safe. The bolt is riding the round into the breech the firing pin is likely striking the primer just enough to fire the round. This will also occure when firing a round with the selector in the A position where the first round will fire and the second round will sometimes have a slight dent in the primer but not enough to fire it.
Have you tried to push and properly seat the single round into the breech before closing the bolt?
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Old June 15, 2018, 21:00   #11
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Why are you leaving the round 1/2 inch out of battery when closing the bolt? What you are likely doing is firing the round out of battery which is not safe. The bolt is riding the round into the breech the firing pin is likely striking the primer just enough to fire the round. This will also occure when firing a round with the selector in the A position where the first round will fire and the second round will sometimes have a slight dent in the primer but not enough to fire it.
Have you tried to push and properly seat the single round into the breech before closing the bolt?
The round isn't firing before battery ??? that would indicate a far protruding firing pin !!! . . . . what i did is the same that happens from an easy release out of the magazine. the bolt guides the round up the ramp and into chamber "bouncing" all the way.
I finished the repair, it has nothing to do with loading.
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Old June 15, 2018, 21:02   #12
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Springfield includes with their M1A rifles a very good information notice reguarding semiauto rifles and the dangers of slam fires. Your rifle was designed to be fed from a magazine not single loaded and the bolt slammed closed on a chambered round. The firing pin has enough kinetic energy to set off some commercial primers. Military primers are made with thicker cups specifically for fullauto and semiauto operating systems. Springfield warns specifically of not using commercial ammo in their rifles for this very reason.
Never load a round in the chamber and slam the bolt closed on it.
If your firing pin spring is kinked get rid of it and get a new one. How much is you hands, face, eyes and even your life worth? Surely more than a couple of bucks for a new firing pin spring.
Your situation as it is is extremely dangerous.
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Old June 15, 2018, 22:33   #13
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This was a fit and finish issue that should have been caught during bolt assembly. They clearly didn't check free movement of the pin.


Ya think genius?

Welcome to DSA QC....or lack there of. Please let us know what response you receive when you "enlighten" DSA of the issue and your fix....I can't wait ...
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Old June 16, 2018, 11:27   #14
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Ya think genius?

Welcome to DSA QC....or lack there of. Please let us know what response you receive when you "enlighten" DSA of the issue and your fix....I can't wait ...
They will probably tell him that he has now voided the warranty on the DSA made bolt or maybe the entire rifle.

Good luck OP.
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Old June 16, 2018, 18:09   #15
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They will probably tell him that he has now voided the warranty on the DSA made bolt or maybe the entire rifle.
Naw. I bet they offer him a QC job...'cause he's so far above the curve of all us retarded 'Files numb nuts...
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Old June 16, 2018, 19:49   #16
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Naw. I bet they offer him a QC job...'cause he's so far above the curve of all us retarded 'Files numb nuts...
No, just your curve, as you seem to be the one who has personalized it.
what is your purpose ? ? the need to feel one up at each posting ?
childish comes to mind. next comes your mean girl rant ? please.
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Old June 16, 2018, 21:54   #17
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Good call on the fix. 401 is just messing with ya
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Old June 17, 2018, 19:10   #18
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No, just your curve, as you seem to be the one who has personalized it.
what is your purpose ? ? the need to feel one up at each posting ?
childish comes to mind. next comes your mean girl rant ? please.
OMG, I'm so sorry....
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Old June 17, 2018, 19:23   #19
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No, just your curve, as you seem to be the one who has personalized it.
what is your purpose ? ? the need to feel one up at each posting ?
childish comes to mind. next comes your mean girl rant ? please.
Considering the fact that 4x401 has built a Hundred plus rifles... I would STFU and listen.

I know all to well that DSA doesn't give a shit about your problems after you pay them. I have had good luck getting warrantee on small parts... But that's about it.
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Old June 17, 2018, 20:04   #20
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Actually, I quit counting a few years ago @ 2 hunerd something...but don't waste oxygen on this guy, he knows it ALL!


He managed to figure out the problem (DSA Shitty, riFal's, service....) before ALL the rest of us!! He deserves a GOLD STAR!!
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Old June 17, 2018, 20:22   #21
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Actually, I quit counting a few years ago @ 2 hunerd something...but don't waste oxygen on this guy, he knows it ALL!


He managed to figure out the problem (DSA Shitty, riFal's, service....) before ALL the rest of us!! He deserves a GOLD STAR!!
i did figure it out before you. But then i had the rifle in front of me !
So why are you getting huffy about not being the first correct answer ?
And I'll take that Gold Star . . . . . . for putting up with your kidz rant !

And if whining is proportional to the number of rifles build . . . . . Congratz !
Nobody needs to STFU listening to whining.
Have a good day anyway............
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Old June 17, 2018, 22:04   #22
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i did figure it out before you. But then i had the rifle in front of me !
So why are you getting huffy about not being the first correct answer ?
And I'll take that Gold Star . . . . . . for putting up with your kidz rant !

And if whining is proportional to the number of rifles build . . . . . Congratz !
Nobody needs to STFU listening to whining.
Have a good day anyway............
This is the third time today on three different forums I have heard somebody being called a "whiner" for stating it as it is, 4x401 may be an overbearing asshole, but he knows his stuff. And I really don't see any whining in his posts.
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Old June 17, 2018, 23:02   #23
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the new kid on the block knows everything
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Old June 17, 2018, 23:20   #24
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the new kid on the block knows everything
Well, he did get it figured out. Most of my issues with newer receivers have been with the coating/finish they use. Both Coonan and DSA have gone to some sort of thick paint that can really make things tight until it's well worn in.
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Old June 18, 2018, 11:15   #25
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This is the third time today on three different forums I have heard somebody being called a "whiner" for stating it as it is, 4x401 may be an overbearing asshole, but he knows his stuff. And I really don't see any whining in his posts.
I invite you to READ his post !!!!
IF you can show me one line of "knowledge in analyzing" this issue or a "contributing repair thought" from 4X401. ( thought so )
I'll gladly appologize. !!!!!!!!!!!!!!!!!!!
But bitchin about DSA or YA think Genius ! isn't any contribution in english that i can decifer.

But one thing i know is the difference between whining and contributions.
And "I" do not assume any person who MAY be new to particular forum, or a particular firearm to know nothing of anything.

Others in this string posted possibles and things to look at, and I included those in the inspection. Id guess some of
them haven't build hundreds of rifles, but then they didn't display whinning or attitude either. They just posted possible points.
This was a major safety issue not an impossible extensive mechanical nightmare.
Is this issue applicable only to FAL ? not lately . . . it also happens in other rifles . . . . MANY other rifles ?

I posted an issue, got some replies, and HAD THE RIFLE in front of me !
Who do you think is going to SEE the issue first ? DAH ! And I posted a detailed verbal sketch of what i did, So others above and below in
knowledge can see the steps taken, and condition of items along the way till fixed. Shame on ME that somehow whinner was left out.

Do I know all . . . . NOT lately . . . . or ever . . . . but then i don't whine like i do.

I will admit its a "shame on me", that new rifle or not, I DID NOT CHECK THE FIRING PIN, PRIOR TO SHOOTING IT !
Have a good day.

Last edited by Scout10; June 26, 2018 at 23:44.
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Old July 15, 2018, 13:21   #26
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DSA Response

SO it has now been a month since I sent a very neutral letter detailing what had happened with the slam fire, what was found and how corrected.
Below is the response from DSA.

"
.
.
.
.
.
.
.
"
That's was it . . . .
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Old July 15, 2018, 15:09   #27
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Quote:
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SO it has now been a month since I sent a very neutral letter detailing what had happened with the slam fire, what was found and how corrected.
Below is the response from DSA.

"
.
.
.
.
.
.
.
"
That's was it . . . .
Yeah well, that's because they care less about guys like us, and more about bashing Mark for his evidence regarding DSA's defects.
Can DSA put out a great product? Yes, they've done it in the past when they CARED about what they sold to the public. But now days? They sell what is the least costly to manufacture.
Glad your problem was sorted out, and by the way, DSA firing pins have been known to break before.
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Old July 15, 2018, 15:17   #28
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Quote:
Originally Posted by Scout10 View Post
SO it has now been a month since I sent a very neutral letter detailing what had happened with the slam fire, what was found and how corrected.
Below is the response from DSA.

"
.
.
.
.
.
.
.
"
That's was it . . . .
Where is Kuss Or Cuss or whoever/whatever he is when you need him ???

Glad you're up and running, Scout
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