0
1730
105
212
https://www.msrdistribution.com/parts-2?specs=f_caliber%3a5.56x45+nato%21%21860%21%21%7c%7cf_caliber%3a5.45x39+5.56x45%21%21840%21%21%7c%7cf_ak+parts%3acompensators%21%210%21%21%7c%7cf_ak+parts%3abolt+carriers+%26+gas+pistons%21%210%21%21