COWITNE Fiber Optics Flip Up Iron Sights Low Profile Front and Rear Backup Sight for Picatinny Weaver Rails

Ok, this might be a bit controversial but I’m gonna say it first and get it out of the way: these are not for real firearms. The set I received have a noticeable amount of play when in the deployed, and locked, position… movement detrimental to accuracy. I attempted to adjust the deployment button by tightening and loosening it, and thus the engagement of the locking lugs, causing them to stick and fail to properly deploy.Based solely on my anecdote that includes a total of 4 “brands” of backup iron sights (BUIS), I’ve concluded that they all suck at this price point… and that price point is “under $40 USD.” All sets featured M1913 Picatinny rail mounting and push-button, sprung deployment. 2 sets were offset, with fiber optic inserts, elevation and windage adjustable, while the other 2 mounted directly, upright.First nearly universal problem: all of the sights were assembled incorrectly. Rear sights facing the wrong way, incorrect markings, etc. just from the one photographed example I’ve provided. As shown in the photo, the sight is mounted the correct direction… you can witness this due to the clearly visible white hashes to adjust windage. The problem is the “helpful” arrow denoting which direction to solve for windage: It’s backward.Sure, it could be a printing error but after examining the sights more closely, it becomes clear that it’s the result of poor assembly and quality control. I know I’m reaching by accusing a Chinese white label factory of operating some form of quality control but, if they utilized QC inspection, they’re clearly overpaid. I’ll make this quick… the windage knob should be on the right, to accommodate the vast majority of humans who are right handed, and because it isn’t, the knob’s label is permanently wrong. The sight, if mounted to accommodate the knob, would make the windage hash marks impossible to see by the user, proving it’s not “user error.” So I inspected the knob in preparation for simply flipping the windage knob to the correct side. Yes, I considered remanufacturing a manufactured item that was manufactured poorly enough to require remanufacturing by the consumer but was quickly dismayed to see it held by a roll pin. Nope, not worth the effort.So I thought, “I’ll just disassemble it and reassemble it with the whole upper half turned 180 degrees.” Unfortunately, I was again snookered. After removing the pivot bolt, I could see the mainspring was mounted onto a pressed in, brass bushing and not the bolt alone. No can do and even if I could, the effort wouldn’t be worth it after what I next discovered…After all the snooping and examination, I could see (and you can, too) the rear sight was biased left A LOT. The top portion leans left and pushing it in the opposite direction results in a hard stop and is uncorrectable. It ain’t broken… it’s just useless for what it’s advertised to be: backup iron sights.So, if you’re planning to use any of these cheap BUIS, they’re airsoft only. There will of course be objections and the occasional set will leave the factory assembled correctly and working perfectly. But you have to ask yourself… is your time worth it? Sure, a brand name set will burn you for $100 or more, but they’ll work, work reliably, work consistently, won’t require fishing until you get a set that works, and won’t require remanufacturing to work.I recently returned all of these and went with the Magpul Pro Steel BUIS, front and rear, for one setup. For my primary system, I went with Sig Sauer BUIS. The difference in quality and performance between the name brands and white label items is shockingly little.Just kidding. The name brand sights were far superior in every single way, except price. More often, it’s the luxuriously priced items in life that are rarely worth the price tag, when examined purely objectively, with most of the value wrapped up in the name’s caché and conspicuous consumption.That’s it. Buy name brand sights if you need sights for something other than airsoft or paintball. Just be careful of those who offer the same, white label junk, only with their name/logo printed on the junk and sold for twice the price. They usually have generic names like “Danielle Defense*” or “Tempe Tactical*,” and will never miss a moment to remind you that they’re “a combat vet-owned reseller and “patriot.”Obviously I want you to support my fellow veterans and our neighbors, but I simply want to remind you that, oftentimes, there’s nothing in a name or worse, a turd product with their name on it.

Ready to roll right out the package the fiber optics make it real nice and easy to use I was used to the "Kakash" style sights and these make it real easy to use

I should have heeded the negative reviews here. There are no instructions. After figuring out how to, and mounting the front sight, I discovered wobble. I rounded the corners of the Allen wrench trying to undo it. The hex head is larger than spec, and the supplied Allen wrench is too small. Found a proper Allen wrench and got it apart, only to discover there's no way to stop the wobble. Rolled the bolt with several layers of aluminum foil, and added several layers of foil on top of the rail, and now I can finally get a firm mount. But, I don't see a way to adjust elevation. Reading other reviews again now, I suspect the windage adjustment will also be unsuitable. I had hoped to boresight with a laser and be done. Now, I expect these sights won't be much more useful than looking down an empty rail would be. Fine, if you only shoot barns at ten yards or less. Not so much if you hope to shoot 1 inch groups at 100 yards.

This set of sights seems well constructed of solid material, but wait to hear the rest. They are easy to install. The one big draw back is that the front sight can not be adjusted properly for elevation. I simply could not adjust the front post down far enough for proper elevation. And I marred up the sight with my AR sight tool. The fiber optics are useless. The push button flip up action works great, its the only part that works great. The front sight is not locked in tight upright. This might one of those products that's hit and miss between customers. You may get a good set or you may get a bad set like I did.

A buttons are hard to push to flip up

I didn't want to spend a lot on backup sights, and these work great with a standard 1x red dot.

Hands down the best bolt on sights I've ever bought. I highly recommend them for any flat top picatinny rifle or shotgun.

I couldn’t lower the front sight low enough to sight in on a CZ Scorpion straight picatinny. Then, in lowered position, sight retract button wouldn’t work. Returned and got the Magpul sights. LOVE ‘EM, but consider other online platforms to save money.