Hex 10rd magazine for use with calibers- .223/5.56x45mm, .300AAC Blackout, .458 SOCOM, .50 Beowulf and more. Used with rifles- AR-15s, SCAR 16, IWI Tavor, CZ Bren, Beretta ARX 100 and more. *Note- this 10rd magazine uses a standard size body, it is not a short magazine.