Well, to begin with:
Post #2, LWRC, SPR, BCM.
Post #4, mrp.
Post #6, BCM, JP, MP.
Post #17, Olys.
Post #20, Answered a couple, but added SGW, FSB, HP, MPI, GK, VLTR, VLTOR.
Post #32, BCG.
Post #65, PWA, CLE, MGI, JVP, LRB.
You get the point. I'm not trying to be a jerk, but it appears that this thread was started to be educational to those of us looking to learn more. I certainly appreciate all the knowledge being shared about AR15's, but it's hard to grasp if I don't know what your talking about because of all the acronyms. I'm sure they are very common to you all such that it would never occur to you that someone wouldn't know what they mean.
Well, I don't know what they mean, so I'm asking.
Thanks,
-Cuz.