In collaboration with Mos-Tek barrels & Dark Mtn Arms, we bring you the 30 Mauser improved offering for the popular Dark Mtn Stowaway series platform and our carefully curated 30mau Subsonic ammo. Near 300 Blk terminal performance and energy in a sub 2lb platform! These are premium 416R 5R button rifled precision-cut barrels threaded 5/8x24 TPI with a flare out for added shoulder rigidity. With our shim installed these are capable of moa or better @ 100y