Desert Tech SRS / Covert Barrel Extension.
Works with all three SRS bolt heads (Short Action .308, Long Action .300 Win Mag, and .338 Lapua Magnum.)
The current version of the extension will fit in SRS-A2, SRS-A1, and Gen 2 chassis.
The SRS Gen 1 has it&rsquos own barrel extensions and the Left Hand SRS-A1 has it&rsquos own barrel extension as well. Both the Left Hand and Gen 1 extensions can be sepal ordered through Special Purpose Rifles.