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  1. HK PARTS AND ACCESSORIES FOR SALE
    Nefarious Arms HK417/MR762 Reaction Rod and HK Armorers Bag - $245 Shipped (Continental US only) I'm assuming that most people know who are looking know what this is, but if not: This item allows you to secure your upper receiver in a bench vise in the same fashion as the Geissele Reaction Rod...
  2. HK416 and HK417 HQ
    I picked up a MR556 upper for cheap a while back and decided to assemble a lightweight setup. I had it sent to Marvin Pitts at Nefarious to widdle-off some of the barrel's heavy-profile (22mm - 19-mm?). I also had the barrel extension tab taken off, the receiver replaced with a HK416 (with F/A...
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