Cylinder DMND for M4-A1/SR16

Knurled diamond pattern for heat dissipationCut-out at bottom section for greater clearance tappet plate to improve loading reliability

Specifications

• X-Ray coating thickness gauge to measure the thickness of silver coating. 
• Special cut in the front makes the tappet get back more when operation.
• Increase the stroke to have a good performance.
• 4 types for Marui