C4/C2 Rear Aperture Insert
Replacement aperture for C4 and C2 Rear Sight.
.050: Precision aperture for target use.
.070: Same size as that included with the C4 and C2 Rear Sights, choose this if you need to replace yours. Equivalent to the smaller of the standard A2 flip apertures.
|Dimensions||2 × .05 × 2 in|
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