The TrackingPoint 300 WM magazine is proprietary and designed only for the ShadowTrax3. This is the only magazine that will fit the ShadowTrax3, and the ShadowTrax3 is the only rifle this magazine will fit. $129.00Call For Availability904-800-6333 Inquiry Form Name* Email* Mobile* Comments*CAPTCHA Category: ACCESSORIES Related products .300 WIN MAG CLEANING KIT 5.56 Magpul Gen3 20 Round Mag Sling Socket, M1400 RAP Dloc-S S.A.R.G. Knob Harris-S Bipod (6″)