Hello, if you have a moment i just wanted to talk about how beautiful this master piece is. The M4A1 made by non other then Colt. A military classic and such a lovely gun to build a SOPMOD. I dont think i have the vocabulary to describe how fabulous this gun really is. Really, there is only one thing that i could say, and that is, i want to stick my slong in the chamber. If you have a M4A1, i dont see any reason why you wouldnt do that! Just pull back the charger and have it stay in an open position, ready to fly forwards, put your dick in the ejection area, all you have to do is click the forward release button and BAM! it will do that amazing clicking sound FLYING forward, and push your dick right into the chamber. of course after doing this several times, you may encounter some problems like jamming the gun (AR's are a like that). If you hit the bolt release and the gun wont chamber your dick, just hit the forward assist button a few times, and that should do it.