I agree with Purhavoc. $175 is absurdly high.
One of the best lower parts kits you can get is the daniel defence kit, and the g&r tactical kit. both are about $80 to 90 bucks. If you get that with an ergo grip you are at about $125.
The psa kits are really great for the price! All the Lpks i've received have been treating me just fine. They have stated publically that us the same suppliers for their kits as FN Fabrique Nationale uses on their on their M4s. I've used over half a dozen PSA kits and have yet to find a fault with any of the small parts. The only thing I didn't like about the PSA kits is that I'd sometimes get a gritty trigger, but that's the nature of a milspec trigger. I've yet to have a trigger pin or bolt catch from PSA break on me (knock on wood).
Hope this helps ya.
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