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Posted: 10/8/2004 2:50:13 PM EDT
[#1]
update upon further examination of my rifle, I noticed a fracture of my flash surpressor right in front of the front sight where the adjument screw is, not knowing when the fracture took place it may be the sole cause of my sight problem.
either way has any one ever heard of the elevation adjusment moving when the rifle was fired? |
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Posted: 10/8/2004 4:43:19 PM EDT
[#2]
Your 100 yd zero should be around 6-8 clicks from the bottom.
A cracked flash hider plays hell with accuracy. I shot 2 High Power matches in a row with crappy scores and was ready to chunk my M1A in the river when I saw that my fh was cracked. A simple $30 fix. It does drive you nuts though. |
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Posted: 10/8/2004 6:51:27 PM EDT
[#3]
You might also inspect the inside of the flash hider to see if you see any bullet contact marks. There isn't much clearance and if anything is bent and the bullets are touching the inside of the hider that will cause a lot of problems also.
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Posted: 10/8/2004 7:15:26 PM EDT
[#4]
yes there is a mark on the flash surpressor were a bullet made contact, do you think this could have cause any other damage? I also experienced what I believed to be a slam fire or a double fire
could this signify an other problem as well? ammo used was portuguese surp. |
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Posted: 10/9/2004 4:58:12 AM EDT
[#5]
This is one I'd send back to Springfield for work.
The receiver has serrations which are the "clicks" on the rear sight asjustments and if these aren't deep enough the sight won't hold a setting. This requires machining or a replacement receiver. Also, bullets should not strike the flash supressor -- this was factory installed, right? Should cost no more than $12 to FedEx ground the rifle to Illinois. -- Chuck |
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Posted: 10/9/2004 8:34:34 AM EDT
[#6]
Chuck - Please correct me if I'm wrong, but isn't there an adjustment for rear sight spring tensio, just like on the M1 Garand??? Maybe he needs a bit more spring tension... For the other issue, I agree - perhaps a return trip to SA is in order...
- georgestrings |
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Posted: 10/9/2004 8:36:16 AM EDT
[#7]
"Your 100 yd zero should be around 6-8 clicks from the bottom."
I agree... - georgestrings |
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Posted: 10/9/2004 2:36:30 PM EDT
[#8]
Thanks, the original poster said he tried tightening the screw on the knob! I assumed he knew which screw to tighten.
 Tighten the screw in the center of the windage knob to tension the elevation. Raise the rear sight all the way up and tighten the windage screw one (1) click at a time until you can't push the rear sight down by thumb pressure. Stop when it won't move. One more click is not better! -- Chuck |
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Posted: 10/9/2004 6:45:25 PM EDT
[#9]
ok I'll give it a try, the screw I tightened was the one on the elevation knob it self, which was incorrect, anyway I am going to call sprinfeild Monday and and talk to them, I'm rather dissapointed my $1200 rifle is giving me soo many problems.
oh and if you can't tell I'm new to the M1A 
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