In this Field Test Shooting Video Review I mainly focus on the ASG CAA M4 Sportline AEG Airsoft Rifle and put it through my typical velocity and accuracy tests I conduct in the Replica Airguns Sea Can Shooting Range. I do compare the ASG CAA M4 Proline AEG Airsoft Rifle to the ASG CAA M4 Sportline version since they look virtually identical but do have some notable differences, like the build materials and much lower cost for the ASG CAA M4 Sportline AEG Airsoft Rifle. That said both ASG CAA M4 AEG Airsoft Rifles did perform very similarly other than a bit of a velocity bump with the ASG CAA M4 Proline model over the Sportline I test in this video. So how did the ASG CAA M4 Sportline AEG Airsoft Rifle perform? I placed 5 rounds through my Chrony Chronograph using .20 gram plastic Airsoft BB's and I got a 335 average fps which is a bit lower than the ASG CAA M4 Proline AEG Airsoft Rifle but still great for a variety of Airsoft shooting situations. I did notice that the FPS seemed to be creeping up slowly as I tested it, maybe some break in was taking place? Read full article here: https://www.replicaairguns.com/2017/11/24/asg-caa-m4-sportline-aeg-airsoft-rifle-field-test-shooting-review