SBA TAC-41 hop-up chamber GBB set

TAC-41 optional hopup unit, for “GBB” inner barrel & “GBB” hopup rubber. Parts included:

• T41-0226 hopup body “GBB” (aviation grade CNC construction)
• T41-0227 hopup rubber socket (aviation grade CNC construction)
• T41-0228 barrel clip (SS304 laser cut)
• T41-0202 hopup wheel
• T41-0203 concave nub
• T41-0224 feeder
• T41-0225 feeder spring guide
• T41-1008 spring
• HOP-316001 60° flat hopup rubber, “GBB” type
• M5X6 ISO7380-2 screw
• M3X6 ISO7462 screws (x3)
• M4X8 DIN7991 screw
• M4X5 ISO4027 screws (x2)
• O ring 8×2 (x1)
• 4 mm ball plunger

This TDC (Top Dead Center) hopup has 0.75 mm nub travel amplitude, divided in 50 positions (15 µm per clic). It includes a feeding system to avoid double feed, a 60° flat “GBB” hopup rubber (SBA-HOP-41), and it is compatible with “GBB” hopup rubbers and “GBB” inner barrels. To accommodate different brand of barrel, it can be assembled either with the barrel clip, or with the 3 M3X6 screws.

Because of a different inner barrel position inside the hopup, this unit require inner barrels at least 3 mm shorter than the “AEG” hopup unit equipped with the same outer barrel to avoid inner barrel sitting out of the outer barrel.

• “510” outer barrel requires a 507 mm GBB inner barrel
• “420” outer barrel requires a 417 mm GBB inner barrel
• “330” outer barrel requires a 327 mm GBB inner barrel

This hopup unit is compatible with the advance hopup kit (SB-HOP-34)