We have refurbished genuine H&K G3 magazines for the PTR-91 rifle. Manufactured by Heckler & Koch from aircraft-grade aluminum with a new matte black finish these original HK mags hold 20 rounds of .308 Winchester or 7.62 NATO ammunition. When you choose a real HK G3 magazine from PTR you can be assured of getting quality and functional reliability from your magazines. - Specifications and Features - Heckler & Koch manufactured - .308 Winchester and 7.62 NATO - 20 rounds capacity - Aluminum construction - Matte black finish - Refurbished - Fits: PTR-91 and clones