Feyachi S37 Fiber Optic Flip Up Iron Sights with Red Green Dots, Tool-Free Adjustment, Rail Mount Rapid Transition Backup Sights

I had installed a "high end name brand" flip up sights on a home defense item I had acquired. It is meant for "closer" targets but does not come with built in iron sights. The "problem" with the "name brand" flip up sights was that they do not have fiber optics or any "material" that highlights the "tip" of the front sight or the "middle" of the back sight. (I am a "professional" (Just meaning I use my equipment actual situations and DEPEND on it daily. I also get paid to be proficient with my equipment.) in in this area so equipment I use needs to be reliable. The "name brand" flip ups are absolutely "reliable" and have great ergonomics. I am capable of "adding highlights" to the installed flip ups if I wanted to put in the time and expense of that, but when I saw these on my "vine" I figured I would give them a shot instead.These come well packaged and seem well designed and built. The back sight has two different set ups, one for "range" and one for "quick reaction". (The quick reaction back sight is absolutely sufficient and exactly what I was looking for personally.) The front sight has a different color "fiber optic" than the back sights so it is a sight picture that is easily acquired, which is excellent. The fiber optic inserts are good and do a decent job of gathering light. (There are other "types" of fiber optic sights that gather "more ambient light" due to an "open design" but with these being flip up sights that is NOT an option, so these do a good job of "light gathering" within the constrains required of a flip up design.They installed easily and seem very secure. (I do train extensively, so I will eventually be using this at the range where they will get "tested" on reliability and how they handle "duty use" (rough). When I "switch" sighting systems on a weapon I need to repeat qualification with it so I will have to do so with this prior to deploying it in my job. (Since I depend on EVERY part of my equipment "qualifying" isn't enough, I have to make sure it KEEPS it's "zero" for accuracy and doesn't break or fail in REAL WORLD USE! So, this product will be getting a "real world" workout prior to me "qualifying" with it because I need to know it is RELIABLE first!) Upon initial inspection I find the fit and build quality very good and anticipate this product to perform well. I will update this review IF IT DOESN'T perform perfectly in those tests as anything less than that would be unsatisfactory to me. If there is no update in the coming weeks this means the product performed "perfectly" in those tests.The price is so good for this product that it is the one thing that gave me "doubt" about its "reliability". At the time of review these flip up sights with fiber optic inserts are priced under $30 and are an excellent deal IMO. That "doubt" pretty much went away upon my receiving them and my initial inspection of the product and installation on another product I own. I was very happy and slightly surprised at the excellent quality of this product considering the price it sells at. Barring it "failing" my range tests (Which I do not expect, but WILL document if it does.) this product is an EXCELLENT buy IMO.

These backup sights are okay and will do the job for range sessions. The red/green dots are not visible when aiming and for my needs are useless. The front sight post has a set screw that locks it into place, that's a nice touch since it moves easily and without the locking screw vibration would cause it to turn out of adjustment. These sights will work nicely on an air rifle or air soft rifle. Both front and rear sights come in a plastic box and a hex wrench is included. Only windage adjustments on the rear sight and the front post is raised/lowered for elevation.

I set these sights up on my personal protection device and couldn't be happier. They were very easy to install and are firmly connected to my piece. They have all of the features of the high end sights at a fraction of the cost. And in fact I like the performance of these sights over the pricier ones.

This set of Picatinny Rail Iron Sights comes in a small plastic box. The sights themselves are extremely well made and machined from aluminum. The front sight is adjustable for elevation and the rear sight is adjustable for windage. The sights are manually raised. They are not spring loaded. There is a small pin that you push in on the right hand side to manually lower the sight. They fit the PIcatinny rail nicely and the set comes with an allen wrench to tighten them up. In the down position they are low enough to clear the scope that I have on that rifle. This depends on what height scope mounts you are using and the diameter of the rear of the scope. The adjustments for windage and elevation work well and the "clicks" are easily felt.The fiber optic red dot on the front sight is easily observable but I find not much use for the green dots on the rear sight. I set the rear sight up fairly close to my eye and I don't see them anyway.I have several sets of Brand X plastic iron sights on several rifles as backup if I have issues with the electronic/optical sighting device. I have several additional rifles I want to add backup iron sights and I will be buying these instead of Brand X.Recommended

These fiber optic iron sights fit well on my units. They came with the tools needed to install. Installation was easy and straightforward. The sights provide accuracy and better performance. This brand makes high quality products and I’ll continue to purchase since they’re a good value.

The sites install easier than others of the same kind since the clamp part is on the side with the bolt instead of the opposite side. The flip-up can be a little difficult but the optics are bright and there are two different kinds of rear sight which is nice

I wanted a set of back-up sights for a rail-equipped airgun (although these sights are really designed more for a modern sporting rifle), and these Feyachi sights were just the ticket. They arrived well packaged in a nice box, with an included Allen wrench for the mounts. The rear aperture sight has an easy windage adjustment with a thumb screw, while the front post sight adjusts for elevation, also with an easy thumbscrew. Markings on the rear sight help you know how much adjustment you've put in. The front sight has no markings, but it's not likely you'd adjust it a lot once set. When flipped up, they lock solidly in place with no play. Folding the sights back down just requires pushing in the spring loaded knobs on the side to unlock the sights. The rear sight has two apertures that switch rapidly just by rotating the sight blade; one aperture is small for precise aiming, while the larger aperture is better for quickly getting on target or following running game. I liked the extra visibility of the red dot on the front post and the two green dots on either side of the rear apertures. Mounting to the rail was easy and solid; I had to loosen the screws a little bit for some room to mount, align the sights with the rail cuts, and tighten with the included Allen wrench. These are some really nice sights at a very good price.