Mauser SR (airsoft) Sniper Rifle Upgrades Possibilites

TAKE 14 I can NOT believe how many takes I took to make this video IF I did verbal narations, I would take MONTHS :0 This is the internal upgrades I made on my Mauser SR. Starting with the inner barrel: Using a PROMETHEUS 534 mm 6. 03 mm inner diameter. Made of stainless steel. I POLISHED the inside of the new barrel. PDI Hopup chamber with TWO allen screws for upright, and up left adjustments. A BIG painintheass to adjust You have to cock the bolt back, and using a tiny allen wrench, adjust the two screws. But once dialed in, WOW I will NOT add reassembly to my video. I am too meticulous about reassembly, and YouTube video time max is ten minutes. Cylinder, spring and piston up grades: I first used my original cylinder, but replace the stock piston to a KING ARMS reinforced piston for APS2, Type 96 FIRST FACTORY reinforced piston head FIRST FACTORY stainless steel spring guide Stock cylinder head I also u