Price: $199 for the complete lot + $15 shipping. One lot = all three parts below.

HK51 project parts lot. These parts were gathered for an HK G3 to HK51-style build that was never started. All photos show the actual parts.

What's included:

  • RCM HK51 barrel, 7.62x51 NATO / .308, approx. 8.375 inches, cold hammer forged, threaded 15x1 RH, marked "51 CHF 0822 7.62 NATO". New, still in its bag.
  • HK G3 / HK91 SEF polymer trigger housing (grip frame), Navy style with SEF pictogram. Housing only, no trigger pack. Used, light wear.
  • HK G3 20-round magazine, 7.62x51 / .308. Used.

No FFL required - these are parts, not a firearm. Ships directly to the buyer, insured, with tracking. United States only.

Legal notes: the buyer is responsible for complying with all federal, state and local laws. Installing an 8.375-inch barrel on a rifle with a stock creates a short-barreled rifle, which is regulated under the NFA.

Restricted states - 20-round magazine: the magazine is not shipped to CA, CO, CT, DC, DE, HI, IL, MA, MD, NJ, NY, RI, VT, WA or any city or county with a lower magazine limit, unless the buyer has a documented legal authorization provided to us before shipment.

Sold as-is, no returns. We do not take trades.