Greetings dear airsoft community, I am new to this forum, so very quick introductions, I am 25 and just starting airsoft. As condensed as possible: My interest is not oriented around making a realistic gun. It is to optimize ones mechanics and take advantage of it's design. I know of the existence of the holy grail guide, and a lot of the info there is taken into consideration. We all know the advantages of bullpups. The Styre A1 has approximately 510mm inner barrel which to my knowledge is awesomely long. The AU3G / AUG A3 is made of very good plastic. The AU4G has a full metal RIS. The UAR is also under consideration. What I want to build is a DMR which; - is pinpoint precise up to a minimum of 100 meters. - shoots at a consistent FPS (+-3). - shoots at as high FPS as mechanically possible. - is electric (which is to say not GBB or HP). I seek any and all advise. May I consider a 190 spring with great internals ? Different bullpup manufacturers have different inner barrel lengths for the same model which is puzzling. I have other questions too, but let's get a discussion flowing first :) Thank you for your time.