Inside the Mechbox: A&K M4 D1 Airsoft Rifle Internals Upgrade pt.3
  • 13 years ago
ASTKilo23 along with AirSplat present the third in a series of internal Upgrades for the A&K M4 D1 AEG rifle. This outstanding airsoft cqb rifle presents a solid base to upgrade or modify. In the third video he installs a DeepFire Titanium Tooth Piston, and an HJFB Silent Piston Head.
Recommended