SIG SAUER CAL-X KIT, SIGMCX, 5.56 NATO, 9IN, LT, W Galvion We kept the best parts

We kept the best parts of the original RUSH12 and upgraded other areas to create one of the most universally adaptable packs on the planet

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accessible gear on the job

small equipment

SIG SAUER CAL-X KIT, SIGMCX, 5.56 NATO, 9IN, LT, W Galvion We kept the best partsSIG SAUER offers upper assemblies and caliber exchange kits in various barrel lengths. All NFA rules apply to installation of these upper assemblies to lower receivers and caliber exchange kits to upper receivers. Upper assemblies and caliber exchange kits with barrel lengths less than 16 ? may only be affixed to lower receivers which (1) are not recorded as a rifle lower by the manufacturer and do not have a stock attached to the lower receiver or