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  1. WANTED TO BUY HK PARTS AND ACCESSORIES
    I’m looking to purchase a MR223 HKEY Handguard. No preference in color so RAL and Black are fine. Please message me and let me know what you have and what you want for it.
    $300 USD
  2. WANTED TO BUY HK PARTS AND ACCESSORIES
    I want to buy two MR223 Upper Receivers. I’m not looking for complete or fully assembled upper receiver groups, just the receiver by itself. No preference on color, so RAL or Black is fine. Please message me and let me know what you have and what you want for it.
    $1,000 USD
  3. HK416 and HK417 HQ
    For the uninitiated, I wanted to post regarding distinguishing between a real 416A5 upper and a MR223A3 upper. As one would expect, the A5 commands much more $$$ than the MR223A3. Both work great, but don't be fooled into paying a higher premium for the less premium option. The 416A5 and...
  4. HK PARTS AND ACCESSORIES FOR SALE
    1. New Haus A5 tan anodized upper receiver. Gently used Nefarious Arms 11” cold hammer forged, chrome lined, socom profile barrel with A5 barrel extension. This was originally a 14.5” barrel that NA shortened to 11” and modified the barrel extension to A5. Used HK416 10” gas block with sling...
    $50 USD
  5. HK PARTS AND ACCESSORIES FOR SALE
    New, never installed. Waited a year and I had to buy 2 barrels to get the one I ordered. Zelle or Venmo accepted - price includes shipping and insurance. Don't have many reviews here but you can check me out on instagram @rmbrclub or my website at rmbrclub.com to see what I do.
    $700 USD
  6. HK PARTS AND ACCESSORIES FOR SALE
    Decided to break up the kit. Zelle or Venmo accepted - price includes shipping and insurance. Don't have many reviews here but you can check me out on instagram @rmbrclub or my website at rmbrclub.com to see what I do.
    $1,600 USD
  7. HK PARTS AND ACCESSORIES FOR SALE
    Of course fits all 556 HK guns: MR223/MR556/416 RAL8000 slimline stock RAL8000 receiver extension A5 wide castle nut Sling end plate Some E payments Credit Card +3% Check or USPS money order for immediate shipping. +$13 USPS Priority Mail no sales to Iowa German Heckler & Koch (not "style"...
    $497 USD
  8. HK PARTS AND ACCESSORIES FOR SALE
    Some E payments Credit Card +3% Check or USPS money order for immediate shipping. +$10 USPS Priority Mail one shipping charge for quantity 3 & can combine shipping with other WTS no sales to Iowa German Heckler & Koch (not "style" not "type" not "licensed" not “contract” which are all code...
    $167 USD
  9. HK PARTS AND ACCESSORIES FOR SALE
    https://www.rmbrclub.com/store/hkproxmr223ral8000tee Note this design is Direct-to-Garment printed on Next Level #3600 blank shirts. These are a little more narrow, much softer shirts than your average "boxy" and "rough" textured shirts. These are printed on demand by a mom and pop shop in TX...
    $32 USD
  10. HK PARTS AND ACCESSORIES FOR SALE
    Everything is new and unused -- I vacuum seal everything that I don't plan on using right away, but I can open the more important items and take additional photos for potential buyers. I accept Zelle as payment, and the price includes shipping. Not breaking up the package nor looking for trades...
    $6,000 USD
  11. HK PARTS AND ACCESSORIES FOR SALE
    Geissele SMR handguard in ddc, looking for 225.00 shipped stateside. Will take partial trades for bg-16 grip in tan. Thanks guys!!
    $225 USD
  12. HK PARTS AND ACCESSORIES FOR SALE
    sling plate for back of receiver - the part which HK ships on MR223 +$10 USPS priority mail - same freight for multiple small items prefer zelle cashapp / venmo Check or USPS money order for immediate shipping German Heckler & Koch (not "style" not "type" not "licensed" not “contract” which...
    $173 USD
  13. HK PARTS AND ACCESSORIES FOR SALE
    Ambi magazine release is drop in on HK MR556 rifles. Ambi bolt catch requires machining on port side for lever. +$11 USPS priority mail - same freight for multiple small parts credit cards no fee Check or USPS money order for immediate shipping German Heckler & Koch (not "style" not "type"...
    $179 USD
  14. WANTED TO BUY HK PARTS AND ACCESSORIES
    I’m looking for a damaged a5 upper receiver. Something that has index key slot damage or damage on the first couple of barrel nut threads. I will be cutting approx 10mm off of the front so any damage in that area is okay. Would prefer the rest of the upper to be in decent shape. Looking to spend...
    $250 USD
  15. WANTED TO BUY HK PARTS AND ACCESSORIES
    I’m looking for a used mr223/hk416a5 slimline hkey rail. Willing to spend up to $500 depending on condition and color. PayPal ready.
    $500 USD
  16. HK PARTS AND ACCESSORIES FOR SALE
    Brand new never used HK556 / MR223 rail. Located in Europe atm. Can be shipped worldwide
    $375 USD
  17. HK PARTS AND ACCESSORIES FOR SALE
    Solid Condition and complete HK416 Quad Rail with retention spring and cross bolt. It’s been rattle can’d but in my experience removable with mineral spirits, a nylon brush & a little elbow grease. Or, your remover of choice. Small ding at the front bottom of the rail. Please See photos.
    $150 USD
  18. HK PARTS AND ACCESSORIES FOR SALE
    Waffen Burk 5 Position adjustable Gas blocks for HK416/MR223/MR556 $725/each shipped (SOLD to HKduder) These are for 11" or longer barrels, but will work for shorter barrel lengths they just may not work with a suppressor - everything is the same between the two models other than the length of...
    $725 USD
  19. HK416 and HK417 HQ
    I've seen a few listing on gunbroker for MR223 (in RAL-8000). Did a small batch come in through some special arrangement? I heard some black 223s came in through Arms Unlimited before I started collecting HK stuff. Just trying to get educated on the market I'm still sort of new here
  20. HK HEADS UP!
    $7k https://www.armsunlimited.com/Heckler-Koch-223-556-Semi-Auto-Pistol-p/mr223a3-16.htm
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