Sierra 22 CAL 77 GR Tipped MatchKing (TMK) THERMAL ACCESSORY the UBR GEN2 features a

the UBR GEN2 features a fixed cheek piece to provide a consistent cheek weld in any of its eight positions

Striker-fired for short consistent trigger pull

but it makes all factory parts interchangeable within the same model

BT Compact:

Closing system with 8 lug bolt (16 for magnum calibers) - already adopted on military weapons with maximum safety

Sierra 22 CAL 77 GR Tipped MatchKing (TMK) THERMAL ACCESSORY the UBR GEN2 features aSierra has enhanced a segment of the MatchKing line by adding the acetal resin tip, thus crowning the Tipped MatchKing (TMK) bullet line. The major advantage of adding a tip to the bullet is the reduction of drag, producing a more favorable ballistic coefficient. Another benefit is reliable feeding in magazine fed firearms. The 77 grain Tipped MatchKing (TMK) allows seating to an OAL that permits cartridges to be loaded into M16 AR15 magazines. While