Need advice. Situation: My wife got me a G&G CM16 Raider 2.0 for Xmass (Can't use it until Xmass ). I'm planing to run a Bestsight 2-8x scope on it. Question, Can i run a 45 degree Refexe sight (I have a cheap Feyachi), will this work? (Kill House distance, lessthan 10 meters). I have an AR-15 setup this way, it works with my AR. The reason i ask is because of the Hopup unit and how it functions. Is this doable?