[TokyoSeven]

TM SR 16, decent gun, TM is a good company, a 3-9 x40mm scope is a nice touch but I gotta admit overkill for airsoft, but hey to each their own on how they want their gun to look.

The way you should look at airsoft guns is, its not the outside shell IE if it looks like an M4 or if it looks like an AK thats gona effect how it works. Your looking at its internals. Any M16 , M4 or MP5 type gun is going to have a version 2 mechbox, version 2's are alright. What you may want is a nice version 3 mechbox, V3's have been known to be very sturdy and reliable, that is not to say V2s are not. Accuracy range and durability. For version 3's your looking at AK's or G36's, but that is not to say that you can look at other guns either like the M14, which uses a Version 7 I believe, but you want an M4 variant so lets keep our thoughts on the version 2.

As for accuracy range and durability.

Well for accuracy your going to want to upgrade the inner barrel of whatever AEG you choose, having a tighter barrel will maximise the airflow thats propelling the BB and effect your accuracey.

For range your going to want a more powerful spring to give your BB that kick down the barrel, also an improved hop up unit wouldnt hurt either, that would help your range.

As for durability, when it comes to it, TM has a plastic body, but Ive never had an issue with it, some people swear that metal bodies will always break and that their no good, some , like me have never had an issue. Classic Army makes all their guns as far as I know of with all metal parts, however I have heard of some CAs even though with superior exterior qualitys to have absolutly shit for internals, but I cannot confirm if this still happens.

I'll slow down on the info for now and let someone else give some input.