Aero M4E1 14.5-inch Do-It-All Rifle with Sig Tango MSR

A one-rifle-does-it-all 14.5-inch build on Aero M4E1 receivers (a no-forward-assist upper and an ambidextrous lower), with a Superlative adjustable gas block and a JP Silent Capture Spring. A Geissele SSA-E trigger, a Sig Tango MSR 1-6, a Ridgeback Rhodie 6 suppressor and FDE Magpul furniture round it out.