One Piece Scope Base – Round Action Receivers


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These bases are made for Christensen Arms by Talley. They will fit rifles with round style receivers, to include 2016 and earlier Ridgeline and Rebel models. These DO NOT fit the Mesa, Modern Precision Rifle, or 2017 and newer Ridgelines.

Ridgeline short-action receivers with serial numbers prior to CB06356, and long-action receivers with serial numbers prior to CB00909, incorporate 6-48 threaded receivers.

Long Action, 20 MOA rails with size 6 screws are no longer available. If you need this rail we suggest moving to a zero MOA rail and use 20 MOA rings.


Available in either zero or 20 MOA taper.
Black anodized
Short action 2.1 oz., Long action 2.35 oz. (with screws)

Additional information


Long, Short


Zero, 20 MOA

Screw Size

6-48, 8-40


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