Products tagged with silverback internals

“GBB” type, flat hopup rubber, 70°, pack of 4
Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber.

Transparent silicone for easier installation, yellow color, 70° hardness, 4 piec Read more

“GBB” type, flat hopup rubber, 50°, pack of 4
Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber.

Transparent silicone for easier installation, blue color, 50° hardness, 4 pieces Read more

“GBB” type, flat hopup rubber, 80°
Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber.

Transparent silicone for easier installation, red color, 80° hardness. Read more

TAC-41 cylinder head “GBB”Optional cylinder head for the TAC-41, “GBB” version, for optional/GBB hopup unit (SBA-HOP-31). 4.60 internal diameter nozzle, Oring included, stainless steel CNC construction.


Compatible with (must be used with a “GBB” hop Read more

This piston head feature:– Viton Oring with a ventilated design.
– No airbrake, short, medium & long airbrake options (for 4.00 mm internal nozzle – for original SRS & TAC-41 cylinder head

– POM piston ring

– NBR 80° Oring damper

– Stainless steel CNC Read more

APS 13 mm, 90 Newtons spring
This spring is following the “APS 13 mm standard” (for 9 mm outside diameter spring guide). It will fit any rifle compatible with this standard, including all SRS (except push mechanism) and all TAC-41. While being compressed Read more

“GBB” type, flat hopup rubber, 60°, pack of 4
Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber.

Transparent silicone for easier installation, light blue color, 60° hardness, 4 Read more

“GBB” type, flat hopup rubber, 60°
Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber.

Transparent silicone for easier installation, Light blue color, 60° hardness. Read more

“GBB” cut inner barrel, passivated brass, 6.05 mm bore, 507 mm long,Ideal for:
– “510 mm” TAC-41 outer barrel used with “GBB” hopup unit. Read more

“GBB” cut inner barrel, passivated brass, 6.05 mm bore, 417 mm long,Ideal for:
– “420 mm” TAC-41 outer barrel used with “GBB” hopup unit. Read more

“AEG” cut inner barrel, passivated brass, 6.05 mm bore, 578 mm long,Ideal for:
– “22 inches” SRS outer barrel Read more

TAC-41, hopup replacement parts set (“GBB” Type version)
Replacement parts for the TAC-41 optional “GBB” Type hopup unit.



Parts included:



– T41-0228 barrel clip (SS304 laser cut)

– T41-0202 hopup wheel

– T41-0203 concave nub

– T41-0224 feeder Read more