Sight Adjustment on a USP... Two Questions

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PaladinVC

New member
Question 1:

My H&K USP 9mm is shooting a litle bit to the left. About two inches at ten yards. A guy at the range told me that, since my sights are dovetailed, I can just "give 'em a little tap" to fix them, but I'm no gunsmith, and I want some more detailed instructions before I try it. So, if anyone can give me instructions, advice, a link to either, or anything else that you think would help me, I'd appreciate it. Thanks.

Question 2:

Is this the right forum for this sort of question? I thought it was a little simple to submit to The Smithy, so I dropped it here. If it should be moved, feel free to do so.
 
When adjusting sights, move the rear sight in the direction you want the bullet to hit. Since you're hitting left of POA, you want to move the sight to the right.

That said, you move the sights a tiny distance. I don't have the exact math for a USP handy but something on the order of 2/100ths of an inch have a 3 inch effect on POI at 25 yards. Don't take that that number as gospel, just the idea that tiny movements have significant effects.

Use a brass or better yet, plastic puch and light hammer to do this work (the marring from the brass will come off with elbow grease and bore cleaner). This is something you want to do at the range so you can see the effect of your efforts.

I purchased a sight adjustment tool from Brownells because it gives you very precise control over sight movement.
 
You can easily do it yourself if you are careful. However, most gunsmiths will move the sight for $10. What is it worth to you?

Do it yourself:
Get a NYLON punch.
Remove the slide.
Cut a 1” long piece of masking tape down the middle so you have two thin 1” long pieces. Put the thin strips of masking tape in front of and behind the rear sight. Put a full width piece of masking tape in front of and behind the rear sight. Lay a dull to semi-sharp knife along the edges of the sight and CAREFULLY cut-mark the tape so that it does not leave a cut on the single layer of tape or your HK. Do this on both sides of the sight. Take a pencil and run it down the blade of the knife and gently run it in the marked grooves until they are very clear. You now have a reference point for drifting the sight to the desired position. The sights may have Loc-Tite in the groove, so it may take a good blow to break it free. Start by gently tapping and increase your force until it moves, then adjust the distance.

Best wishes, Shoney
 
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