Xpress, trigicons (sp), GLOCK night sight. mepro, GLOCK factory. I'm a GLOCK Amorer. The factory non night sights are crap. The front sights can be popped off easily and at the worst times. I questioned teh GLOCK rep about this and they advised they know there crap but are cheap. Best of luck.
Not a Glock but I just changed to XS Sight Systems 24/7 Night Sights on my Duty Handgun (a Kimber Model BP TEN II 1911 .45 ACP). Man do I love the sight picture these sights offer. I think they are a lot faster and easier to pick up for ME.
I did have a slight problem. As my sight set came shipped my Handgun printed LOW. After shooting it for a while I contacted XS SIght Systems. I was told that they offer 3 different height rear sights for their sight sets so as to be able to fine tune the zero. As it turned out my sight set was packaged with the wrong height rear sight. XS Sight Systems sent me out a replacement that fixed the problem perfectly, and asked that I return the original rear sight as they would just exchange the rear sights with me.
I now have my new (Taller) rear sight on my Duty Handgun and it prints exactly like I want it to.
I like this sight system so well I put a HiViz Fiber Optic Front Sight and V Notch Rear Sight on my Ruger MKIII 22/45 4" Bull Barrel .22 LR Handgun also so the sight picture is very similar to the XS Sight Systems Sights on my Duty Handgun.
Mr. Remington is quite correct. Even Glock admits their sights are about the only destructible part on an otherwise indestructible pistol. In speaking with well known firearms trainer Chuck Taylor about his personal torture test of a glock pistol it (the front sight) was the only thing to fall off or break. I personally have had Trijicons put on both my Glocks and have been happy ever since. Just my two pennies worth.
I have always looked for ways to save money and gain skills. I have the firearms basics covered so I rarely buy firearms these days. But I do watch for bargains. Sometimes a little TLC with simple tools will let you bring an old gun back to life without investing a lot of money. One such find was a side by side 12 gauge marked “W. Richards” It is not from the fine English gun maker Wesley Richards, it is a cheap knock off copy probably made in Belgium about a hundred years ago...