This Sig P320 X-Five LEGION 17 round extended magazine is compatible with your P320 and P250 pistols and features a milled aluminum baseplate with an aggressive diamond pattern on the base from Henning Group.Sig Sauer factory reliabilitySteel body polymer followerHenning Group milled aluminum baseplate17 round capacityThis legion-branded baseplate is made by Henning Group which specializes in creating high-end aftermarket baseplates for competitive shooters military and police.This magazine is functional with your Sig P320 Carry Full-Size and X-Five variants. For P320 owners this Legion mag is the perfect magazine to keep inside or nearby your pistol at all times.Score big savings and fast shipping on all your favorite Sig Sauer Firearms and Accessories available online at Ammunition Depot.