So i will be getting some LCAs and the upper to go with it. the only thing is i have heard you can not reuse the stock bolts and nuts. so i now need to get new nuts and bolts. but i am all sorts of confused when it comes down to 10.9 and 9.8 and 12mm or 14mm. someone who has gotten the bolts and installed them please help. and where do i get them? ive searched this forum as well as other forums and google. i cant seem to find a definite answer. any help will be greatly appreciated. thank you.