The MK12 MOD1 SPR is back in circulation in airsoft. It was the preferred DMR AEG over a decade ago and Double Bell is producing it with and it now has a quick spring release feature but not MOSFET. It is still a good platform for an upgraded airsoft DMR so you might want to consider it given it that it is affordable. ASG Olsztyn goes over this AEG, checking out its features and testing it at the range.
