I can only speak to how I used this sight pusher, I have no idea how it will work for anyone else. Follow the manufacturer’s directions of course.I cut small pieces of gorilla tape and stuck them directly on the sight, right where the slanted pusher piece would come in contact with the sight. Doing this did a good job of keeping the metal pusher piece from marring the sights, both the plastic old ones I was removing & the new steel ones I was inserting. I wrapped the slides with a sticky note and taped it in place to keep the vice part of the pusher from marring the slides. I cut a little window to expose the sight area. This worked just fine on my Glocks. I needed a narrower lower shim for our 43’s slide to sit on than the provided metal one because the vice portion was clamping the shim, not the narrower slide, so I just trimmed a piece of wooden paint stir stick so it was just narrower than the slide to make it work.I used a 9/16 socket and only turned the solid bold head end, not the nut end. I just turned the tool and slide around one way or the other so I could keep the ratchet on the solid end. All in all it’s a nice affordable tool that worked great for me. I had to reverse things once or twice because I pushed slightly too far past center and needed to bring the sight back the other way, no biggie, spin it around and push it back a smidge. It takes a little doing and fiddling but isn’t that what husbands are for?Side note: I used a Fixxxer Front Sight Installation Hex Tool For Glock 3/16 Hex Nut Driver Tool (it's magnetic, cheap and works great) and a little blue Loctite for dealing with the front sights.I didn't purchase everything here at Amazon, but here's a list of minor modifications to the Glocks pictured below. The NDZ Performance rear cover plates are billet aluminum and make it easy to tell our Glocks apart, the night sights are Glock OEM pieces, we have extended slide releases, Glock makes some OEM ones, but not for the 43, so that's from another company (Vickers) and works great. The Streamlights are all light/red laser combos, I saved a ton of cash by foregoing the newest green lasers.Mom’s Carry 43NDZ Rear Slide Cover Plate Purple (GLK43-RP-PUR)Glock OEM Night Sights (Front NF17G24, Rear 33578)Vickers Extended Slide Stop Release (VTSS-002)Streamlight Light/Red Laser Combo (TLR-6, the variation that fits Glock 42/43)Mom’s Bedside 19 Gen3NDZ Rear Slide Cover Plate Pink (GLK-RP-PNK-000)Glock OEM Night Sights (Front NF17G24, Rear NR17G24)Glock OEM Extended Slide Stop Release (SP07496)Streamlight Light/Red Laser Combo (TLR-4)Dad’s Bedside 19 Gen3NDZ Rear Slide Cover Plate Gold (GLK-RP-GLD-000)Glock OEM Night Sights (Front NF17G24, Rear NR17G24)Glock OEM Extended Slide Stop Release (SP07496)Streamlight Light/Red Laser Combo (TLR-4)Dad’s Carry 26 Gen3NDZ Rear Slide Cover Plate Silver (GLK-RP-SIL-000)Glock OEM Night Sights (Front NF17G24, Rear NR17G24)Glock OEM Extended Slide Stop Release (SP07496)Streamlight Light/Red Laser Combo (TLR-6, the regular model)

First, you gotta know that installing sites is VERY easy. Don't waste your money paying a gunsmith. This tool is far cheaper and more hassle-free than finding and using a gunsmith and allows you to do site installation every bit as good. You can find YouTube videos or discussions on how to install sites for just about any handgun you can name. Just got this a couple of days ago and have already used it to install TruGlo TFX sites on two Glock 30s and a Walther PPQ 45, each of which come with standard crappy plastic sites (PPQ's sites are far less crappy than Glock's and fine if you don't need glow-in-the-dark sites, and yes, TruGlo has sites for the Walther PPQ). You really understand how terrible the Glock boxy "U-type" factory sites are once you remove them and see how cheap and poor quality they are. The PPQ doesn't have the "parallel sides" on the slide that are stated as being required, but it worked fine anyway. The Glocks do and were easy-peasy. The PPQ was at the limit of slide height this tool can handle, and I had to be a bit more careful and REALLY clamp down the slide to prevent slide rotation during installation. Might be smart to sand down the moving block thingy slightly to insure it clears the PPQ slide. The slide height spacer was used for the Glocks but not for the taller PPQ. With the PPQ I suggest using a buffer of some sort (nylon, leather, etc.) - something to prevent contact between the slide and the moving metal block that rides along to push the rear site. I didn't and ended up with a tiny (really unnoticeable by anyone but me) scuff mark on the slide. By the way, be sure and also purchase the Glock front site tool here on Amazon (several types), which is also used for the PPQ if TruGlo sites are installed since TruGlo installation uses the same little front site screw for both Glock and Walther PPQ. The screw and necessary little wrench comes with the TruGlo kit. And of course, Loctite Blue 243 threadlocker is needed. This tool simply pushes the old dovetail rear site off and then is used to push the new one on. Now its off to the range to perfect the aim if necessary by tweaking the rear site drift, which using this tool can be easily done at the range. I also purchased a different rear site tool, but it came with numerous piece-parts that I didn't want to waste time figuring out and was more expensive. Waste of money. This one requires no figuring out. It's extremely simple and, with the size bolt used, takes care of things quickly. You can open the box and in less than 15 minutes or so have your new rear site installed.

Ok, so I thought I'd give this a try changing from the stock sights on my Glock 19 Gen 4 to Trijicon HD night sights. Should have bought a better tool! The bevel on the pusher wasn't even close to the same angle on the sight(stock or Trijicon). Mangled the plastic stock sight beyond repair. Was able to get the new sight in by flipping the pusher block upside down till the block contacted the slide. Then inverted the block back to normal and used the straight side of the blade on the angled sight because the angled side didn't mate up. If the pusher block was redesigned a bit I think this may be a decent tool but not as it stands now. I wouldn't buy this again and I wouldn't recommend it to anyone. I'll probably just keep the pos as I may find some other use for it at some time. Should have known better than to get a cheep tool for an expensive gun and sight.Update:So two days after I posted the original review I received a phone call from the company owner(U.S. Based manufacturer) concerned about my issues with the tool. He made every effort solve any issues I had. Talk about great customer service. He explained that this is more of a uvinersal tool as opposed the specific for the Glock. Also mentioned that he makes a newer generation of this with better slide grip, so I'll probably look for that next time I need to swap sights. Always nice to get customer service of this level and support an AMERICAN small business.

Product and service were excellent.