This Ultimate version itself can be used as a low profile single TDC grub screw unit with included Top Cover adjustment screw that can be adjusted with a hex key tool, or you can combine it with our STALKER Low Profile AAP-01 TDC Mini Kit (Included in this Ultimate Set) so the hop can be adjusted with a clicker wheel setup or, you can combine it with the STALKER TDC Rail Kits which are sold separately so the wheel is in between the Stalker rail kits and your hop is easy to adjust on the fly. 

Because the AAP-01 is a lightweight pistol, we choose to make the Hopup Body piece from Stainless steel to balance the weight of the pistol midsection. Adding weight to your gun to balance the blowback recoil, especially in a polymer framed gun, is nothing new when it comes to the world of competitive shooting. We thought it would be cool to balance the blowback recoil and maintain the accuracy of the AAP-01.
Besides that, Unlike Aluminum chamber bodies, the Hopup unit body cannot wear out by screw thread or drill bits! Super Strong!

What's in this Ultimate Kraken AAP-01 TDC Chamber Package?

• 1x Kraken 60° U-Hop AAP-01 Specific Bucking (Info here) For Stock Nozzle & CowCow Nozzle
• 1x Kraken AAP-01 Chamber Aluminum Head Part
• 1x Kraken AAP-01 Chamber Stainless Steel Body Part
• 1x CNC Aluminum Hop Plate
• 1x Chamber Top Cover Attachment Screw
• 2x Grub Body Screws To Assemble the Hopup
• 2x Hopup barrel screws to lock the inner barrel
• 1x Flat Bottom Hop Adjustment Grub Screw For Top Cover
• 1x Stainless Steel threaded Connector Pillar For TDC Wheel or To Connect Various Attachments
• 1x Stalker Black AAP-01 TDC Mini Turret Base Made From CNC Aluminum
• 1x Screw to lock the Mini Kit On The AAP-01 Receiver
• 1x Ball Point Grub Screw To Install In The TDC Turret (Loctite Advised)
• 1x Stalker Black TDC Hop Wheel Made From Stainless Steel (STALKER Logo Engraved)

Features:
Increase range
Increase accuracy
Increase better BB flight path
Add hop Adjustment function with Allan/Hex key from the top of your AAP-01 or surface mounted TDC Clicker Wheel Function With Supplied Wheel and TDC Mini turret

Compatablity: 

Works in AAP-01 (Low Profile Mode and TDC Mini Turret Mode, with all attachments except spider clamp)
Works in AAP-01C (Low Profile Mode or AAP-01C Spider Clamp)
Works in AAC Black Mamba Kit A&B (Low Profile Mode or Black Mamba Spider Clamp)
Works With AAC SMG Handguard + Buttstock
Works in CTM FUKU-2 Slide Short (Low profile Mode or FUKU-2 Spider Clamp)
Works in CTM FUKU-2 Slide Long (Low profile Mode or FUKU-2 Spider Clamp)
Works in TTI PCC Kit (Need Separate Stalker Kraken AAP-01 PCC Kit Hop Adjuster Pin)
Works in TTI Mini Mamba Upper (Low Profile Mode+Wheel or TTI Mamba Spider Clamp)
Works in TTI Scorpion Upper (Low Profile Mode+Wheel or TTI Scorpion Spider Clamp)