Gold standard for hicapa springs. Cheap, effective, and fairly reliable
Very nicely made mock suppressor that rival's AG's equivalent offering. The clicking during tightening isn't as distinct as with AG's but that's a minor nitpick.
Receiver has some pretty noticeable wobble, can be fixed with spacers but for a price that rivals the actual aero ar-15 receiver you'd have figure they'd atleast be a bit more tight on the tolerances...
It's been 60 days and I still haven't received my parts. Don't know at this point.
Unfortunately I wasn't able to use the spring. It was too strong