TSR100 Adjustable Aperture Sight for The Ruger

First - these things arrived about 4-6 days earlier than expected. So good job on that. I ordered the tool separately but on the same day, and it arrived in the same package.I installed them on a standard 10/22 that I have had since I was a child. I think I got it when I was ten, and I'm 45 now. Which is part of the reason I needed the better sights!Installation - straight forward but a little bit tricky at the same time. First of all the most important screw on the front is the set screw that sets tension in the dovetail. Install this partially BEFORE you put the sight on the rifle. Don't tighten it, but put it in finger tight and back off about a half-turn or so. There is a slot on the bottom of the sight, where the two halves expand outward. The screw threads into one part and pushes against the other part. You can see the screw (or feel for it with a piece of paper or a business card) when it makes contact with the other half. Thread it in until it makes contact, then back it off until it just disappears. This makes it harder to cross-thread the screw later. Then install it, center it up (the side screws help with that) add some loc-tite and snug 'er up.The two screws on the sides of the front sight are very short. I stripped one out and had to get a longer one from Lowe's. It's kind of a pain because it is just long enough to interfere with the elevation on the front sight, but from what I can see that screw is there mainly as a safety in case the set screw fails. So on mine can loosen it, adjust your elevation, then tighten it back up. Once elevation is set you should be good. Just sight in on good ammo. I used CCI Mini Mags - good stuff but still inexpensive. Remington bulk pack shot about the same POA.Honestly with the set screw plus the two side screws there is more holding this thing in than the original sight (from Ruger) ever had. I've had it fall off before.Rear sight is simple. Two screws that go in the pre-drilled holes where you would normally install a scope. They use the rear two. Remember though - the Ruger's receiver is aluminum. Strip one out and you will have a real mess.Adjustment - pretty easy. I think it's a lot like an M4/AR-15 setup. I bought the tool which helps. From what I observed the adjustments are right what the instructions say - about 1/4" per click at 25 yards. When installed they were "on the paper" at 25 so adjustments weren't too hard. There is supposedly a way to adjust the rear for elevation but I can't find it (doesn't mean it's not there).Shooting - Took my rifle from about 3" groups at 25 yards to 1" or less. They don't make the rifle more accurate per se, but they make it MUCH easier to line up the sights properly. And this was with the front sight somewhat loose, as I had cross-threaded the set screw. It didn't move much though because of the screws on the side.To summarize:Pros - I would say the installation is easy overall. And they do work. Seem to hold zero well too. Adjustment is easy and seemed consistent. I think the rear does elevation adjustment but I didn't use it. Everything you need sans the thread locker (which they suggest using in the instructions) is included including the allen wrenches. Speaking of the instructions, they are very well written.Cons - be careful with those widdle bitty screws, and they really should include a small tube of the thread locker with it. But a small tube is really cheap (get the blue, not the red BTW). But even without it these sights are a very good value.I gave it 4 stars but wish I could do 4-1/2.

I will begin with the end. My liking of the TSR100 sight is unqualified. While I have a few nits with the sight, overall I am completely satisfied with it.I have been shooting Ruger 10/22 rifles for decades. These are superb semi-automatic .22 rifles. I have never cared for the stock Ruger sights for a variety of reasons. Finally, this year I resolved to explore alternative iron sights. I selected the Tech Sight TSR100 because it is essentially identical to the sights that my M16a1 rifle had during my Army service. So at least I was familiar with how it worked! Nonetheless, I was initially skeptical of whether I would be satisfied with the accuracy that I would achieve with this sight.The rear portion of the sight is easy for the user to install. Not so much the front sight. This involves tapping the original OEM sight out, and I decided that I would have a gunsmith do this part of the installation for me. It worked out just fine.Taking my Ruger 10/22 now equipped with a TSR100 sight to the range was exciting: would the sight initially be close to zero, or would it be one of those situations where at first the rounds were nowhere near the target at 25 yards? (my sighting distance). After firing a ten round magazine at a 7 inch bull's-eye target at 25 yards from a sandbag rest I was pleased to see that all ten rounds were on the target, slightly high and to the right. This sight adjusts windage from the rear sight and elevation by adjusting the front sight post. After a few clicks to move the POI (Point of Impact) left and down, on the third magazine of ten rounds my rounds were centered on the bull's-eye with a shot group of about 1 inch. I was using bulk Federal ammunition; good stuff but nothing fancy.This sight is very stable on the rifle, and once sighted in at the desired range it should be good to go for that range at least essentially forever. Unlike some sights that are adjusted by screws or (worse) set screws, the sighting hardware here is designed such that it will not shake loose with use. It is click-adjustable and secured by a detent rather than the inferior scheme of loosening a screw, moving the adjustment, and then tightening the screw back up. I can state from bitter experience that sights designed this way always result in loss of zero sooner or later. That will not happen with the TSR100.The sight picture with the TSR100 is very easy to work with. This is a functional and effective sight which is why the US Army adopted one just like it for the M-16a1 rifle.A few points. Firstly, this sight is not easy to adjust unless you have the Tech Sight TS155 tool that is designed for it. The link to my review of this tool is here. http://www.amazon.com/review/R2U3H3AQDSK2U4/ref=cm_cr_rdp_perm I recommend that every user of the TSR100 pick up one or two of these tools. While some people say that a .223 round can be used to adjust the TSR100, I did not find this to be so, at least not with my on-hand .223 rounds. With the TS155 tool it is easy to adjust this sight. Plus, using this tool prevents scratching the finish on the sight. The sight comes with instructions for how to move the POI left, right, up, and down. Unlike my GI sights, this is not written on the sight itself, which would have been nice.Tech Sight makes a TSR200 sight which allows fine elevation adjustments to be made using the rear aperture. I had at first wondered if I should have sprung for this slightly more expensive sight. All I can say is that adjusting the TSR100 could not have been easier, and the adjustments were quite precise such that I was able to easily move the POI right onto the center of the target. So perhaps it is best to save the price differential for ammunition.Overall, this is a wonderful and not-too-expensive addition to the Ruger 10/22. The TSR100 is perfect for hunters, marksmen, or for putting together an Appleseed "Liberty Rifle." Highly recommended without reservation. RJB.

This kit is a huge upgrade over the stock sights, and worth every penny. I would recommend the TSR200 version for the regular 10/22, and the TSR100 for the takedown 10/22. Mainly because the TSR200 is designed more for higher accuracy and is better suited for a barrel that doesn't come off the gun.The instructions are pretty straight forward, and the parts are very simple to work with. You will need some thread lock, a small precision flat head screwdriver, and a drift punch and hammer.The only complaint I had was when installing the front sight. The front sight has two button screws an washers that install with one on each side and thread locker. Simple enough. Then the front has a set screw that installs at an angle.The problem is if you have a 10/22 with a threaded barrel and flash hider or sound suppressor installed. The angle that the set screw goes in requires that you remove whatever is installed and the instructions don't mention that.It's a very minor thing, but something to be ready for if you have a 10/22 that fits into that category. You will also want an five point AR sight tool to adjust the sights once installed. Techsights makes a compact version of this tool and it's worth getting to keep with the rifle.All in all, it's a great upgrade and we'll worth getting.