Looks nice, function and concept is bad - Timber Creek AR Billet Dust Cover

It is nothing but a hassle, I have a billet upper so I couldn't use the knurled rod they give you, the "Adjustable" detent on the set screw or whatever is crummy and a bad idea, i stripped mine out trying to adjust it properly after I had it installed so now ill have to deal with it not being super secure and or the metal shavings its producing from contacting the edge of the screw lip on the upper. Ill keep it on until it breaks, I suppose i can Dremel it off when it breaks and just buy a quick install cover from another company. oh , also the spring that came with it broke just from tension against the receiver as i was installing it so I had to use a different dust covers spring.

I would really recommend something else even if this is cheap it's a headache and a concern.