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10/30/2013 3:23:26 PM EDT
i encountered a problem while shooting yesterday. i dunno if its the ammo or the gun. what is happening is that it was striking the primer and not firing. i shot 2 different ammo and used 2 different bolts. it started after about 100 rounds then seem to get worse. only thing i can think of is the hammer is not hitting hard enough. any help would be  much appreciated.
10/30/2013 3:43:08 PM EDT
[#1]
What ammo???

What rifle?

Have you cleaned it??

Did you assembly the lower??

VAGUE POST IS VAGUE
10/30/2013 4:17:20 PM EDT
[#2]
The last lower I put together, I put the hammer spring on "backwards".  I had a Chiappa .22 upper on it, the first shot fired, and then I had to figure out the problem.

*ETA- I see you have 100 rounds through it.  Never mind.
10/30/2013 4:18:23 PM EDT
[#3]
tula ammo and monarch i assembled the lower. its not the first time i been out with it i got about 1500 rounds threw it since i built it a few months back. i usallly dont clean my ar but i had done a full disassemble of the upper bolt didnt touch the lower just wiped it with a rag so it was clean. its denting the primer on the round. id just throw it back in the clip and they would fire with a second strike. it just seemed really odd.
10/30/2013 4:19:45 PM EDT
[#4]
yes i been shooting alot with it just this was really pissing me off
10/30/2013 4:32:04 PM EDT
[#5]
Quoted:
i encountered a problem while shooting yesterday. i dunno if its the ammo or the gun. what is happening is that it was striking the primer and not firing. i shot 2 different ammo and used 2 different bolts. it started after about 100 rounds then seem to get worse. only thing i can think of is the hammer is not hitting hard enough. any help would be  much appreciated.
View Quote


As mentioned by some others, you likely have the spring installed incorrectly.  The hammer will fall but not hard enough for proper ignition.  Get a known correct example ( actual gun or picture) and compare and correct   No worries, many have done this including myself

By the way, if you look at a primer after cycling a round through ( without firing) you will note that the firing pin always comes in contact with the primer, making a light dent.  ALWAYS KEEP THE GUN POINTED IN A SFE DIRECTION....  Over several decades, most of the unintentional discharges I have seen were usually  over basic safety violations and or carelessness.   Don't be one of them.
10/30/2013 4:34:03 PM EDT
[#6]
Quote History
Quoted:
tula ammo and monarch i assembled the lower. its not the first time i been out with it i got about 1500 rounds threw it since i built it a few months back. i usallly dont clean my ar but i had done a full disassemble of the upper bolt didnt touch the lower just wiped it with a rag so it was clean. its denting the primer on the round. id just throw it back in the clip and they would fire with a second strike. it just seemed really odd.
View Quote


There may be more going on with your rifle but both choices in ammo are very likely to be causing the issues.  Tula and Monarch aren't known for having the most reliable ammo.
10/30/2013 5:23:17 PM EDT
[#7]
ya i know just cheap plinking ammo, but since its not a fresh build i trying to narrow it down ill check the spring wish i had taken pics to show u the indent in the primer
10/30/2013 5:41:12 PM EDT
[#8]
Quote History
Quoted:
tula ammo and monarch i assembled the lower. its not the first time i been out with it i got about 1500 rounds threw it since i built it a few months back. i usallly dont clean my ar but i had done a full disassemble of the upper bolt didnt touch the lower just wiped it with a rag so it was clean. its denting the primer on the round. id just throw it back in the clip and they would fire with a second strike. it just seemed really odd.
View Quote


Ok, so if I read this correctly, you have 1,500 rds through it, you cleaned it, and now you're having light primer strikes?

Think about it.

Take the BCG apart, clean and lube it.  Inspect everything.  Maybe you left a chunk of junk in there that is causing your problem.

After 1,500 rds it is unlikely that the hammer spring being installed wrong suddenly caused problems.  Look at it anyway, won't hurt.



10/30/2013 10:10:02 PM EDT
[#9]
Retaining pin in firing pin wrong spot? Tip broke off firing pin? Hammer spring in wrong or broken? That's what I'd check.
10/30/2013 10:53:54 PM EDT
[#10]
Quote History
Quoted:
By the way, if you look at a primer after cycling a round through (without firing) you will note that the firing pin always comes in contact with the primer, making a light dent.
View Quote


+1

That's what I suspected is happening. Hammer spring may be totally kaput, but you're thinking it's doing something due to the floating firing pin...
10/31/2013 4:02:58 PM EDT
[#11]
i used 2 different bolts carriers while i was shooting and yes after 1500 rounds it was the first time i tore down and cleaned the whole rifle. ill look at the trigger group and springs thanks for the help!
10/31/2013 7:11:17 PM EDT
[#12]
Quote History
Quoted:
i used 2 different bolts carriers while i was shooting and yes after 1500 rounds it was the first time i tore down and cleaned the whole rifle. ill look at the trigger group and springs thanks for the help!
View Quote


UHHHH...That could be your problem...
Most Ar's need cleaning and lube... lots of it and often lol
10/31/2013 7:39:38 PM EDT
[#13]

Quote History
Quoted:
UHHHH...That could be your problem...

Most Ar's need cleaning and lube... lots of it and often lol
View Quote View All Quotes
View All Quotes
Quote History
Quoted:



Quoted:

i used 2 different bolts carriers while i was shooting and yes after 1500 rounds it was the first time i tore down and cleaned the whole rifle. ill look at the trigger group and springs thanks for the help!




UHHHH...That could be your problem...

Most Ar's need cleaning and lube... lots of it and often lol
Christ.  AR's need lots of quality lube but very little cleaning.  If your AR requires frequent cleaning to function properly it is a piece of shit.

 
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