This is all the hardware you need to complete your Krink hinge block. 
This set includes:

Cross pin for the dust cover
Gas tube lock plunger + spring
4mm cross pin for securing the block to the barrel

This set will automatically be discounted when added to the cart with a Hinge Block.
If you have previously purchased a hinge block without hardware, please send an email and I will give you a discount code to purchase this.