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Heckler & Koch MR556A4

rifle handgun 5.56x45mm hecklerkoch
GrabAGun.com has the best offer of $3749.00, with no recent change in price, across a total of 4 listings.
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Current Listings
Heckler and Koch MR556A4 5.56 16.5" Barrel 10-Rounds GrabAGun.com $3749.00 2026/1/20
HK MR556A4 5.56mm 16.5" Rifle, Black RifleGear.com $3749.00 2026/1/20
HK MR556A4 5.56mm 11" Pistol, Black RifleGear.com $3749.00 2026/1/20
(SN: 241-419032) Heckler & Koch MR556A4 Rifle 5.56 NATO (L2025-14734) NEW CollectorsFirearms.com $4479.95 2026/1/20