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  1. HK416 and HK417 HQ
    When buying the rifle as described by the model numbers above, doesn't it come in a cardboard outer box and in that Box is the HK carry case with the rifle and accessories in it? Then, in my case, I received a 30 rd. magazine but from another company not an HK magazine, is that normal?
  2. WANTED TO BUY HK PARTS AND ACCESSORIES
    As stated, 9.5" handguard with numbers going to to 40 (not 36) with the NS suppressor marking in black without the flip up sight. Thanks! Price can be negotiated; also have an mp5 RAS for trade if interested!
    $600 USD
  3. HK NFA TALK
    All, I recently purchased an HK mr556a1 and would like to eventually SBR (10.4" version) it. From what I understand, I will need to purchase the following items or services: Buy a new barrel or find a gunsmith who will chop my current barrel Buy a new handguard Buy a shortened gas block My...
  4. HKPRO MEMBERS' GALLERY
    Finally have all the girls in one place. Figured I would share this picture of the happy family. MR556A1 with Vortex Razor HD 1-10 USC/UMP Conversion .45 (HDPS) SBR SP5 With HK Parts Binary/Navy trigger grp SBR With Silencerco hybrid 46 HK 45T HK45C HK P30L with HK Parts Compensator
  5. HK416 and HK417 HQ
    I have an MR556A1 and I was wondering whether is possible to add a non-HK complete upper to my HK lower. I read in the manual that the rifle is made to AR-15 specifications but it was not explicitly stated that this is possible. For example, can I add a KAC SR-15 5.56 11.5" to my HK lower...
  6. HK LONG GUN TALK
    Last night I installed a HoloSun 510C-GR on my MR556A1. I was very excited as this was my first encounter with an LED Reflex and have heard nothing but great thing's about the HoloSun brand. After installing and inserting the battery I finally looked down and to my dismay I had more of a blurry...
  7. HK PARTS AND ACCESSORIES FOR SALE
    Brand new, unfired, never mounted on a lower, in original HK range bag with all accessories. HKey rail, heavy barrel. 1,900 + Shipping, OBO. I can provide HK Pro site references.
    $1,900 USD
  8. HK LONG GUNS FOR SALE
    I have for sale a brand new, unfired MR556A1 upper for 1500$ shipped. This is the newest model with the thinner profile barrel and mlok handguard. Perfect for anyone wanting to upgrade to the thinner barrel. I bought a complete MR556A1 a few months ago, but got ahold of an HK416 Upper. This will...
  9. HK LONG GUN TALK
    Greetings all. I'm looking for an 11" handguard (picatinny or m-lock; metal or polymer) that will work for an MR556A1 that has a 14.5" barrel... and has an inner diameter of at least 1.6" (4.06cm). The handguard will have to slide over a welded suppressor that has a diameter of 1.58" to allow...
  10. HK416 and HK417 HQ
    I know the title of this post sounds stupid, but consider me stupid when it comes to AR's. The MR556A1 is my very first! I am a long time owner of HK USP pistols so I know the drill and can disassemble and reassemble them blindfolded (fibbing a little of course), but consider me very...
  11. HK LONG GUN TALK
    I'm the proud owner of a new no box, unfired MR556A1 that came with four HK mags and a HK Factory soft case. I paid $1,894.25 shipped, how did I do? Secondly, I understand the bolt carrier is filed down so as to not function in full-auto. I want to put it on top of my class 3 model 601 so...
  12. HKPRO MEMBERS' GALLERY
    I sense a trend: adding a Trijicon to every HK and clone I own! Pictured are my MR556A1 with 3.5x ACOG, SP5K pistol with 1.5x Compact ACOG, and MP5/40 clone pistol with MRO.
  13. HK416 and HK417 HQ
    For those who have a lot of rounds through their MR556/762s, how have they been holding up for you, and how many rounds have you put through them? I'm especially curious about that infamous chromeless barrel, as there's a popular thread on another forum where a guy who runs a high-volume range...
  14. WANTED TO BUY HK PARTS AND ACCESSORIES
    Hey all, I'm looking for a stripped, or mostly stripped, HK MR556 A1 lower receiver. I really don't need the buttstock or pistol grip, but I wouldn't mind the internals if that's what's available. Please PM me here on the forum if you have one to offer. I'd like it to me in new or as-new...
  15. HK NFA TALK
    All - After inconclusive fragmented search results for this information on this site, just posting to contribute to/enable future searches. Copy of e-mail response from cs@heckler-koch-us.com received as of 2014.12.11: -------------------------------------------------- ********, the thread...
  16. HK416 and HK417 HQ
    Looking for an ambidextrous mag release for the mr556a1. Can anyone help?
  17. HK416 and HK417 HQ
    Saw in a recent thread that someone would rather have and a5 instead of the new competition model. So I thought whats the a5 blah blah. Looked at an old thread with the same question. Didn't fully answer my question. So what is the difference?
  18. HK416 and HK417 HQ
    I am a new owner of a HK MR556A1 and recently installed a new backplate sling attachment. In doing so, I lost the pressure spring and locking pin (Owners Manual parts: 83.) Stop pin for locking pin Part #233115 84.) Pressure spring Part #233116. What is the purpose of these two parts and...
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