ntomsw
Banned
That's because the $90 ones were designed for actual real rifles. The ones at dealextreme aren't even the official PTS magpul airsoft units. For all I know they would work just fine, but I'm not going to assume that. I have read that even Magpul PTS sights have failed on real rifles since it is hard to tell them apart and some people don't realize that magpul has airsoft stuff. I wouldn't use these chinese knock off's on a rifle I may have to rely on.
Ahh, good info. Thanks.
I am glad I bought mine form BCM then. I think they are the real deal.