Bob The Axemand talks about the Ares Airsoft SR-25 AEG which is a favourite of airsoft players for DMR role. But there is more about this AEG as you can program it with the Ares Electric Programmer for the Electronic Trigger System which is a feature in newer Ares and Amoeba Airsoft guns... "The Knight's Armament Full Metal SR-25ER W/ETS AEG in tan or black is a perfect airsoft gun for your sniper or DMR set up. Based on the .308 real steel rifle, the Ares version seen here is a great replica as well as extremely functional on the airsoft battlefield. With long barrel and 450FPS, this airsoft gun has excellent range and accuracy right out of the box.

It can also be configured for semi-auto only or a large range of other select fire modes with the use of the Electronic Programmer. The gun also features a quick spring change feature so you'll have the ability to change the FPS to whatever your field allows."