Quote Originally Posted by NQNPIII View Post
Those adapters are as much as a stripped lower! I've got 2 of these. http://www.primaryarms.com/matrix-ar...receiver-ma9gl I have the parts to build them. LRBHO too!
They are expensive and probably a little overpriced but I'm sure the cost of tooling up to make it wasn't insignificant. I have two dedicated PSA Glock lowers I bought for $69 each but they didn't have LBHO. I built an upper using the New Frontier Armory LBHO upper which is a little over $200 just for a bare upper. It works great after a slight tweak.

If the LBHO on the Matrix Arms lower is reliable that looks like a great option. The LBHO on my adapter has been perfect through about 500-600 rounds.