ASPUK Custom Built Upgrade Service Includes, 

Advanced Plus Upgrade:

EZ Trigger + Advanced Piston
Steel Spring Guide
M150 Spring
Steel Cylinder
Advanced Steel Cylinder Head
Shooter polished Stainless Steel 6.02 tb barrel
Air Seal Hop Up Chamber 
Barrel spacers
PTFE Tape Mod Hop Bucking onto Barrel
PTFE Tape Cylinder Head Thread


All Upgrades Also include an ASPUK Service Record Book,

BB Weight to use: 0.32 to 0.45g

Service, Labour and Return 48hr Postage