only two of my 8 distributors even carry howa mags. not currently available. probably haven't made any in a while that haven't gone out attached to a gun....Howa doesn't have any available on their site either.
Howa HPTM15-0053 Detachable Magazine Black Polymer 5rd 7.62x39mm, 6.5 Grendel for Howa 1500
MFR # HPTM15-0053 UPC # 682146320084