MP5 SD Magazine - 4/76
https://staging.atlasarms.com//shop/mp5sd1976mag-mp5-sd-magazine-4-76-244
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(0 review)
Original Heckler & Koch MP5SD Straight Magazine.
Marked SD MP5 HK with 4/76 date code.
Used, good, surplus condition as expected for a 40+ year old magazine. Shows signs of use like scratches and handling marks.
Be sure this is legal in your jurisdiction before ordering.