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