BodgeUps Airsoft reviews the Mancraft SDiK, an HPA kit for sniper rifles, especially for the VSR-10, made in Poland... "Today I'm reviewing the Mancraft SDIK (Sniper Drop In Kit) for VSR compatible airsoft sniper rifles. Thank you to Mancraft for supplying the unit! I am using the CO2 bulb adaptor. And I didn't have a great experience. Should I use HPA? Let me know what you think."