Products tagged with silverback internals

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 adapter is threaded in 1/4-20 UNC. It can be mounted on the tripod mount of the SRS-A2, SRS-A2M2, and TAC-41 P.It allows to fix either a Harris bipod or a sling swivel in a backward position, closer to the center of gravity of the rifle.
Stainless st Read more

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

– “20 inches” SRS outer barrel Read more

“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, 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, 70°
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. Read more

CNC Steel version of the variable mass piston body, for extreme mass configuration (55.1 grams instead of 19.0 grams for the aluminium version).
Compatible with:



– original SRS piston (SBA-BPS-13)

– original TAC-41 piston (SBA-BPS-30)

– variable ma Read more

APS 13 mm, 120 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 compresse 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” type, flat hopup rubber, 80°, 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, red color, 80° hardness, 4 piec Read more

“GBB” type, flat hopup rubber, 50°
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. Read more