Nice gas block but this is not the one they sent me. Mine is open on the end and no cool cobra. Very light and 2set screws. Not yet mounted awaiting a new barrel Cobratac Response: We no longer laser mark our gas blocks due to many people complaining about having markings on their firearm... but it is our same great quality gas block at an affordable price!

Used with Cobra Tac Systems rail. Easy to install using the two set screws.

looks great and works perfect roll pin was tight but that is how it's supposed to be and came with roll pin highly recommend and happy with my order.

Nice low profile gas block with set screw. Bolted up nice and tight along with good alignment for the gas tube and roll pin.

Fit n finish are perfect

the roll pin isnt supposed to fit easy, you need a punch set and some skill to install them... Please go see a qualified armorer...

A person could not ask for better quality and exceptional service for their AR parts & accessories needs. What a great company!

works perfectly, would purchase again

Has some issues after it was first installed but got it working after a little tweaking

No complaints here. Did it's job amazingly and for cheap.

Very well maid. Great shipping as always

Product is lite and appears well made. I would buy this again.