AR15.Com Archives
 Unusual problem - M&P 9c front sight
macman37  [Team Member]
9/19/2012 10:18:21 AM
I took a class this past weekend with both my full size 9 and my 9c... I swapped guns a couple times during the day for various drills.

We did some walkback drills And at 25 yd, the 9c was hitting the head of an IPSC cardboard target when I was holding on the center of the chest... When i shot the full size at or near that range, it was much closer to point of aim.

Both guns have Trijicon HD sights made in the last 2 years...

So my question is, does a compact gun need a shorter front sight (I think) to hit close to POA at ranges exceeding 10 yards?
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DPMS556-223  [Member]
9/19/2012 11:32:19 AM
If you're hitting higher i would think you need a taller front sight to lower bullet impact.
macman37  [Team Member]
9/19/2012 1:19:43 PM
Originally Posted By DPMS556-223:
If you're hitting higher i would think you need a taller front sight to lower bullet impact.


Wait, explain...
macman37  [Team Member]
9/19/2012 10:26:44 PM
I think I need a shorter front sight, correct if I'm wrong...
TheTacticalCoyote  [Team Member]
9/19/2012 10:57:55 PM
Originally Posted By macman37:
I think I need a shorter front sight, correct if I'm wrong...


You are wrong. Use your fingers as sights and line up your shot. Now raise your front finger "sight" and notice your rear sight has to raise to line it up. That will bring your POI down.
New4John  [Member]
9/20/2012 1:41:45 PM
If it's 1/3 of a target off & fine at closer distances my guess is it's you torquing the gun up and not the sights.

No offensive.
Marksman14  [Team Member]
9/20/2012 2:44:43 PM
Originally Posted By macman37:
I think I need a shorter front sight, correct if I'm wrong...


You need a taller. Using the rear sight as a fixed pivot point, in order for the barrel to point downward and to keep the same point of aim, you need a taller front sight to "push" the barrel downward, thus dropping the POI.
HuttoAg96  [Member]
9/20/2012 3:07:42 PM
THIS.
Originally Posted By New4John:
If it's 1/3 of a target off & fine at closer distances my guess is it's you torquing the gun up and not the sights.

No offensive.

a few inches up or down is normal. A foot is not.
macman37  [Team Member]
9/20/2012 3:12:06 PM
Originally Posted By HuttoAg96:
THIS.
Originally Posted By New4John:
If it's 1/3 of a target off & fine at closer distances my guess is it's you torquing the gun up and not the sights.

No offensive.

a few inches up or down is normal. A foot is not.


This was confirmed by the instructor. it is the gun.

I guess I need a taller front sight.
New4John  [Member]
9/20/2012 9:15:27 PM
Yeah, well reading is fundamental and I completely failed.
I totally misread your original post. I thought you said the 9c was hitting right at close range, when you said the FS was hitting correctly at or near the 25 yd range.
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