This brand new FN America SCAR 20S NRCH (38-100544-2) is a semi-automatic rifle which fires the .308 WIN round. It has a 20" barrel (1:10 twist) and matte black finish. This includes one 10-round magazine, non reciprocating charging handle, two stage match Geissele Super SCAR trigger, adjustable stock & cheek piece, quad rail, box, lock and manual.