So, one of my Airsoft buddies has recently been salivating over the idea of long range combat. I have managed to steer him away from the idea of a BASR (he is a doorkicker, not a sniper), but have not entirely (thank goodness), deterred him from the idea of getting a DMR. He has already bought his base gun, as can be found here: APS Silver Edge Gearbox Full Metal 12.5" M4 Airsoft AEG Rifle, Airsoft Guns, Airsoft Electric Rifles, APS - Evike.com Airsoft Superstore . He now has no idea what to do. I have forced him to read the Holy Grail to Your DMR AEG, but he still has no idea what to do... :ashamed::ashamed::ashamed:. So, I have taken it into my own hands to build this DMR for him. He needs some recommendations on parts, so anything in that area would be wonderful. I have some of the basics covered, I.E. Prommy 455mm 6.03, Prowin Hopup with Flat-Hop, Systema spring (just don't know what measurement yet, he is waffling 410, and 430fps), and large quantities of teflon tape :hehe:. What I also would like to know, is there anything I should be worried about due to the EBB function? Any unforeseen snags? Any delicate things that can be easily destroyed, etc. Thanks!