Silverback

SRS Variable Mass Piston | Pull Bolt

5x SRS Spring Guide Pre-load Washers

SRS-A2 long Handguard, Mlok
CNC aviation grade aluminium
230 Grams

SRS .338 muzzle brake, Model A2 (DTSS silencer compatible)

SRS Type Piston End

TAC-41 Fluted Outer Barrel 330mm

Stainless steel mag catch contact insert. Lightweight polymer magazine.
Desert Tech licensed product.

This is a fully licensed replica of the Desert Tech SRS A2/M2 bullpup rifle. Each receiver has a unique CNC engraved serial number.

Silverback SRS Nylon stock (OD Green) (Mag Catch Not Included)

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”

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)