We get another peek on the upcomong SLR SOLO M4 Series under the SLR Airsoftworks brand, which is an agreement between DYTAC and SLR Rifleworks. These airsoft rifles will be using the SLR SOLO Series Rails and will feature the DYTAC quick spring change in the gearbox. Here is Evike.com telling is more about the series in this episode of "The Gun Corner".