Very solid folding sight - GG&G Bolt On Flip Up Front Sights

Got this sight for a build because I like to switch back and forth between iron sights and optics. My favorite sight because it is so solid when the sight is deployed. I can get 1" groups at 50 yards with these sights repeatably. Fully usable as primary sighting system. The locking mechanism is VERY solid and won't rattle or shake at all when deployed. Still works awesome after ~500 rounds of pretty hard use. Only problem I had is after 2 quick magazines, I had a rust spot show up on the gas block within hours, but it came off with some CLP pretty quickly. I know steel tends to rust very quickly when you heat it up like that, though. No issues other than that. Excellent product. Not a bargain, but definately worth what you pay for it.
Pros: High quality, easy to use, durable, solid lock-up.
Cons: I got the gun very hot on a wet day and got a rust spot on the gas block.

This review was written in the old system and had content requirements that are different than reviews written today.