CTM CNC Enlarged Upper Lock for AAP-01/C - Black Silent Industries Stainless Steel Set screw 3*8mm

Stainless Steel Set screw 3*8mm * 2

You can refer to this video to install the CNC Hop-Up Chamber Set for MWS M4 GBBR

or duty use

Dual Oring Seal

WE Glock Outer Barrel Threaded Gold

CTM CNC Enlarged Upper Lock for AAP-01/C - Black Silent Industries Stainless Steel Set screw 3*8mmEnlarged Upper Lock AAP 01 C Black Material: 6061 CNC Aluminium. Colour: BK, SV, GD, RD, BU, VT Weight: 10. 0 g Package Contents : Enlarged Upper Lock Spring * 1 6061 CNC Enlarged Upper Lock for AAP01 C * 1 Feature : Larger surface area than the original Upper Lock, making it easier to press. Fully CNC machined from a solid piece for a premium feel and durability. Ergonomically designed surface for improved comfort and control.