• Mid-Length Convertible

58™M-CV MOD is ARM's mid-length S.I.R.® w/the front relieved to fit around the carbine length front sight post and/or to allow for a fold down front sight.

Wt. 13.6 oz*

*Wt. measured w/o 1,2,3 rails and sling swivel which are included with the SIR system. Rails can be removed/added as needed.

*Front handguard cap must be removed prior to installation.