Why do you need them?
I know it's all about if your primary optic crashes but let's be realistic, how often does that happen? I saw it on Saving Private Ryan when the German sniper gets shot through the scope (which was debunked on Mythbusters) but then again, he wasn't too healthy to use his iron sights. On the other hand Nightforce or Leupold has a photo on their website of a scope shot by bad guys that still worked, and didn't need BUIS. But let's be realistic...What's an imagined scenario when you, not the military, need BUIS? You go on a hunting trip and your scope comes loose. If you torque your screws every time you take that gun out it's not going to happen. Even if it still comes loose and you can take off your scope in the field (because you happen to have the correct screwdriver handy) then are you going to trust your BUIS to continue the hunt? Or are you going to head back to the truck?
Are we talking about some post-apocalyptic world imagined by Preppers where society breaks down and your red dot scope runs out of power, ten years into the future, and you are still alive? Home invasion maybe where again, the red dot doesn't go on? Swimming through a river and the cheap optic you bought is not waterproof? Do you bush-bash a lot if you're not carrying a tax-payer funded rifle? The more likely scenario is a loose scope which cuts your trip to the range short. Even if you've driven hours to get somewhere you then drive into town to get it fixed. In a rare home defence situation where you bring up your sights and realise you need BUIS...How often does that happen? And you then have time to do transition...bearing in mind if it's a proper scope the rear BUIS will be under the scope and cannot be lifted until the scope is removed from the gun, unless you have QD levers, and have the precious seconds to do this, and also have time to buy a winning lottery ticket, and on it goes.
From another point of view, if you think genuine BUIS are 'overpriced' then you've already made up your mind that they are not a priority. My thoughts are to save your money and not put a set of cheap or counterfeits on your gun that just make it heavier and are prone to loss of zero, and you don't trust them anyway.
If you are looking for iron sights you could consider complimenting rather than replacing the main optic on your gun. That's a more likely scenario. Something like a laser or 45degree offset sights. Always deployed and the main scope doesn't have to come off. Short range shooting where the scope is too slow or doesn't work. Again, get a genuine set of Dueck's or KAS offsets (be careful of Chinese clones). Genuine's cost hundreds of dollars and if this seems unreasonable then don't get them because clearly you don't think you'll ever need them. Repeatability in sight systems costs money and there's no way around this fact.
Another option is to have a compact red dot on the primary sight. Or, have the primary sight on QD mounts and carry a spare, zeroed red dot in your gear. Keeps your gun lighter and more compact/streamlined.
Bottom line, cheap counterfeit gun parts are a scourge, for a scenario so unlikely that yet another option is to spend that money on ammunition instead.
I know it's all about if your primary optic crashes but let's be realistic, how often does that happen? I saw it on Saving Private Ryan when the German sniper gets shot through the scope (which was debunked on Mythbusters) but then again, he wasn't too healthy to use his iron sights. On the other hand Nightforce or Leupold has a photo on their website of a scope shot by bad guys that still worked, and didn't need BUIS. But let's be realistic...What's an imagined scenario when you, not the military, need BUIS? You go on a hunting trip and your scope comes loose. If you torque your screws every time you take that gun out it's not going to happen. Even if it still comes loose and you can take off your scope in the field (because you happen to have the correct screwdriver handy) then are you going to trust your BUIS to continue the hunt? Or are you going to head back to the truck?
Are we talking about some post-apocalyptic world imagined by Preppers where society breaks down and your red dot scope runs out of power, ten years into the future, and you are still alive? Home invasion maybe where again, the red dot doesn't go on? Swimming through a river and the cheap optic you bought is not waterproof? Do you bush-bash a lot if you're not carrying a tax-payer funded rifle? The more likely scenario is a loose scope which cuts your trip to the range short. Even if you've driven hours to get somewhere you then drive into town to get it fixed. In a rare home defence situation where you bring up your sights and realise you need BUIS...How often does that happen? And you then have time to do transition...bearing in mind if it's a proper scope the rear BUIS will be under the scope and cannot be lifted until the scope is removed from the gun, unless you have QD levers, and have the precious seconds to do this, and also have time to buy a winning lottery ticket, and on it goes.
From another point of view, if you think genuine BUIS are 'overpriced' then you've already made up your mind that they are not a priority. My thoughts are to save your money and not put a set of cheap or counterfeits on your gun that just make it heavier and are prone to loss of zero, and you don't trust them anyway.
If you are looking for iron sights you could consider complimenting rather than replacing the main optic on your gun. That's a more likely scenario. Something like a laser or 45degree offset sights. Always deployed and the main scope doesn't have to come off. Short range shooting where the scope is too slow or doesn't work. Again, get a genuine set of Dueck's or KAS offsets (be careful of Chinese clones). Genuine's cost hundreds of dollars and if this seems unreasonable then don't get them because clearly you don't think you'll ever need them. Repeatability in sight systems costs money and there's no way around this fact.
Another option is to have a compact red dot on the primary sight. Or, have the primary sight on QD mounts and carry a spare, zeroed red dot in your gear. Keeps your gun lighter and more compact/streamlined.
Bottom line, cheap counterfeit gun parts are a scourge, for a scenario so unlikely that yet another option is to spend that money on ammunition instead.