In first episode of season 2 of the Laylax International's "What's the Difference" series, Marck talks about buffer tubes... "Welcome back to What's The Difference and its SEASON 2! This week we explore a common part often overlooked, the buffer tube! What's really the difference between a stock one and an 'upgraded one'? We are about to find out!"

MadBull Airsoft's latest Youtube video on these products... "Use high performance stock-fit LiPO tubes to power up your AEG. Mad Bull Licensed ACE Buffer Tube model M4-7 and PWS are fully licensed. This incredible new design allows for easy storage for your lipoly battery. No longer do you need to use a battery box, battery pouch, or any other style external battery option.