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AR15.COM
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4/12/2003 7:05:15 PM EDT
I need to adjust the front sight on my new DPMS 20" hbar,  I looked on Cheaperthandirt.com and the description for their A2 tool says it... "Works on front sight post which have 4 pin holes".  My front sight has 5 pin holes.  Is that uncommon?  Is there a tool for my rifle, or do I have to half-ass my sight adjustment with screwdrivers?

BTW...this is my first AR, and I'm thoroughly pleased with it so far!  I guess its time to throw my SKS on the scrap heap.
4/12/2003 7:36:36 PM EDT
[#1]
The 4 prongs on the thinner end is for the A2 square front post sight, and 5 prongs is for the A1 round post.

[img]http://www.bushmaster.com/shopping/gunsmith/ray-005.jpg[/img]
4/13/2003 6:53:02 AM EDT
[#2]
Great!  DMPS is peddling barrels with the old M16 front sight post to save a few cents.....

Replace the post with the square M16A2 post.  Round front post has shadows and light reflectins from its round shape which distort your sight picture enough to cause problems at longer ranges in certain light patterns.

-- Chuck
4/13/2003 11:19:28 AM EDT
[#3]
I've got a new upper with 4 point front sight post that I can't move. I've tried spraying it with lubricant but still nothing. Am I going to have to get one of these tools or are there any other suggestions?
4/13/2003 7:45:10 PM EDT
[#4]
Get the tool; $5 at a gunshow, and you'll never want to adjust sights with anything else after you use one.

-Troy
4/13/2003 7:45:23 PM EDT
[#5]
Great! DMPS is peddling barrels with the old M16 front sight post to save a few cents.....
View Quote


Could that be the case?...I was sort of disappointed by the texture/finish of the front site.  Compared to the rest of the rifle, it looks kind of crappy.

Can just the little sight post it-self be changed out, or does the whole sight have to be removed from the barrel and replaced?
4/13/2003 11:31:21 PM EDT
[#6]
DPMS uses cast front sight blocks on at least some of their rifles.  I don't know which yours has, but cast parts tend to look prettier, but aren't nearly as tough as a forging.

And, yes, the front sight post simply unscrews and is easily replaced.

-Troy
4/14/2003 4:39:01 PM EDT
[#7]
Thanks for the info Troy!

-Nate
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