Proto Matrix Rail
Halo B
45/45
Black Aluminum back cap
Everything else stock.
Strengths:
Won't strip on you like the plastic one.
Weaknesses:
None
Review:
Well theirs not much to say about this thing. I was forced to get it because my first backcap stripper and the bolt shot out the back and completely destroyed the threads on the cap. So I got this thing and it hasn't stripped on me and probobly won't. Thats a 10 in my book. I say you should get this before you get any other up so the same thing that happened to me the first time won't happen to you
Conclusion:
Huge advantage over the plastic backcap, because it won't strip in the middle of a game and force you to call yourself out =)
