I have replaced my ccp sight with mepro pps night sight. I have trij hd sight for my p99 and mepro for my ppq. The rear sight will not work. There is groove adjustment screw. If you try to force the ppq rear sight in, you will flatten out the groove. I had to do some work get pps sight to fit. Here they are.
1 front sight will fit but you need to pressure/force the front sight in. I thought it will hold by pressure. The front fight popped out second range trip. I did not put the front secure screw in because it is too big and will interfere with the recoil spring. I had to take out about 0.3 mm diameter of the screw to fit.
2 rear sight is tight. If you just want to use the sight push tool to force it in, it will work. But adjustment will not be possible. I sand off about 0.15 mm off the bottom of the night sight to match the walther sight. Will it is just a little too much. So, it is loose. But I can use the adjustment screw. My suggestion is to sane off the bottom coating and try to fit.
3 the cut out of the mepro sight is a little too big for the ccp adjustment screw. So, I use the bianry compound the harden when you mix them to fill up the space. Then use the screw to get the right shape before it harden. It does work now and no wabble now.
My suggestion is if you can wait till aftermarket to come out with right parts, wait. If you are a tinkerer, use pps sight with side adjustment hole. Do it at your own risk.
Exactly, I to have the H&K P30 & I have the H&K VP9 as well, these sights are almost identical to those. They are fantastic. The dots are a little bigger than the H&K's but are the same phosphorus paint so they will charge and work like night sights for a little time just like the H&K's. I am 57 so I like the bigger dots over the OEM sights. Optics Planet has them for under $50, so I had to buy a 2 oz. bottle of gun cleaner to get my cart over 50 dollars and qualify for free shipping. I have added the link I used to purchase.
The rear sight just screws off with the allen wrench that came with the pistol,
and a punch and hammer are all that is required to install the new rear sight.
The front sight was a little tricky.
I think there was something wrong with the new front sight in that the tapped hole was not in the middle of the obround as was the original sight. So I found a new screw and washer that would work from a web site called bolt depot.com. I had to purchase a M2 x .04 mm machine head screw x 4 mm long and a washer. Both items cost 10 cents with $5.95 shipping. But shipping was fast. I ordered on Monday evening and they were in my mailbox Friday, so I think the price of the shipping was well worth receiving items in 4 days.
I used the pin that was in the same hardware bag that came with the pistol that the allen wrenches were in to take out the pin holding the blowback piston to get access to the front sight screw.