Badabing Pictures tries the Tokyo Marui AKM Gas Blowback Rifle fitted  with a BBF Hop Arm to check how it lifts. This comes with the with Maple Leaf Omega Hop Up Tensioner Nub. Mainly made of 316L stainless steel and weighs 30g... "The BBF Stainless Hop Up Arm for the TM AKM GBBR. Let’s see what it’s all about."

Hadron Airsoft Designs shows how to install the Silent Industries MTW hop arm... "A quick test of the new camera setup, where we do a simple installation of the Silent Industries hop arm into our MTW.

The bolt release catch we will cover in the next videos, along with a gorilla airsoft FCU installation.