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Discussion Starter #1
Does anyone use xs big dot sights on ther usp/uspc? I was looking into them and had a few questions. First I only seen the usp listed as a model will these also fit the usp compact models? Secondly do they make a big difference over stock usp style sights (which I like) when it comes to faster target acquisition in combat/self defense scenarios. I am getting my usp compact ready for dull time ccw use and was interested if these would be worth the purchase/installation. Thanks in advance for the assistance.
 

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I have had the Xs big dot on two guns. I bought a P30 with them on it and as part of a gunsmithing package had them installed on a Kahr PM9. I did not like the sights on either gun and have removed both sets of sights. The P30 got the Hiene straight eight and the Kahr and traditional 3 dot. I don't know how much "speed" the Xs sights really give you if any at all, but my experience is a decrease in practical accuracy. I rather hit what I am aiming at and take a little bit longer and the Xs sights sacrifice to much accuracy for speed. I really like the Hience straight eight sights on my P30, it has made a world of different in the accuracy. Some people love the Xs big dot sights, I am not one of them and I would be very wary of buying them if you are seriously considering. Would be best if you could try out a buddies gun that has them install first.
 

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I had a set of Big Dots on a SIG P239. The big front dot was fine.......the rear sight sucked though. A traditional "U" notch is much better for both precision and speed, in my opinion.
 

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Discussion Starter #4
Thank you guys for the replies -- I might just leave them stock now I like them and if no practical advantage can be gained by switching it would be a waste of money -- so instead I will by more ammo and range time and practice with the stock sights
 

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I bought a set and installed them on a Gen 4 Glock 26. I had a tough time with them. My first shots were so high I hit the target hanger at my range (but had to be perfectly centered to hit it). I was using the suggested aiming picture:



I found that if I modified this picture to "dot the i" using the center of the front sight instead of the whole sight, I got much better accuracy. So basically dotting with the tritium vial instead of the golf ball.

I did find they were much faster to acquire, and in a close range, defensive situation, it would be very easy to just put the golf ball on the BG and squeeze the trigger. But, my feeling is at those ranges, you could point shoot just as effectively. I sold the Glock and now have Trijicon 3 dots on my carry gun.
 

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I bought a set and installed them on a Gen 4 Glock 26. I had a tough time with them. My first shots were so high I hit the target hanger at my range (but had to be perfectly centered to hit it). I was using the suggested aiming picture:



I found that if I modified this picture to "dot the i" using the center of the front sight instead of the whole sight, I got much better accuracy. So basically dotting with the tritium vial instead of the golf ball.

I did find they were much faster to acquire, and in a close range, defensive situation, it would be very easy to just put the golf ball on the BG and squeeze the trigger. But, my feeling is at those ranges, you could point shoot just as effectively. I sold the Glock and now have Trijicon 3 dots on my carry gun.
My experience with the sight picture is the same as yours. I am running them on a colt new agent and I am not a disbeliever at all, they are so fast on target, more so than traditional sights. I am debating putting them on all my guns, XS or Heine or similar, but I am phasing out the three dot sights regardless as I have found at speed I am quicker aligning two dots or one dot in the front and solid black in the rear
 

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Just fyi before you decide the rear sight (The "I") sits very low in the dovetail on the USPc... It was my first sight install and I thought I did something wrong but when emailing XS big dot's this is the reply I got...

"Is your concern that the sight is sitting very low in the slide?

If so, don't be. On USP's especially the compacts & if yours is a 40
S&W, that rear sight sits very low.

On the USP's H&K uses only 1 set of sights. Different calibers and
slide lengths of course can require different heights to bring point of
impact to point of aim. They accomplish this by adjusting the depth of
the rear sight dovetail. Not only does this mean that they only have to
inventory 1 set of sights, but also in the assembly room they can't put
the wrong set of sights on a pistol.

If you have some other concern that I am not seeing, please let me know
about it, we can & do sell individual sights."


I am deciding between Heinies and Mepro's. Heinies because of the simplified sight picture (front dot over rear dot) and I have been told by HK CS that Trijicons on HK's makes the shooter shoot high and they recommend mepro's.
 

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Discussion Starter #8
I am considering the straight 8's now (haven't ruled out the xs yet but interest is declining a bit), again I like the hk sights that come stock on the gun so I don't have to be in a hurry to decide. Thanks for everyone's input I appreciate the assistance.
 
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