can accept other Arcturus upper receiver groups (not included)

Also it can improve the recoil control and make easier handling on blow back cycling

ABS Material

Metal Slide & Frame

trigger guard and buttcap

Maxx Model CNC Aluminum Advanced Speed Trigger (Style B) (Red) 260mm can accept other Arcturus upperMaxx Model CNC Aluminum Advanced Speed Trigger (Style B) is specially designed for fast response, smooth and consistent trigger pull on Ver. 2 Gear Box of M4 M16 series Airsoft AEG Rifles. The Advanced Speed Trigger has multiple adjustment points to control pre travel and over travel to shorten trigger pull and prevent damage to electronic switches on controller boards. The Advanced Speed Trigger is completely compatible with the popular TITAN