SigTac Part Multi Caliber 1913 PSB buffer tube adaptive kit 1913 pic rail for use with sig xi 556 or 552.ADAPTER-PSB-1913-BLK ADAPTER-PSB-1913-BLK

SIG Sauer
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SIG SAUER 1913 stock adapter gives shooters the ability to install a stock that use a 1913 rail interface on your 556xi rifle/pistol.

Specifications and Features:
Multi caliber
Aluminum construction