HK91 Questions for Owners
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    Default HK91 Questions for Owners

    I am looking around for my first real HK rifle. I’m pretty sure it’s going to be a HK91.
    Are either of the finishes more durable than the others? Grey/blue vs Black vs NATO Black
    Any of the years “fit” better/tighter with accessories? Bipod, stocks, magazines, optics
    My last question right now is if any years are more accurate or just tighter built rifles than others?
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    The HK91 when in production was already an old gun because of its G3 routes so the fit/finish has always been consistent in my experience. so long as you go with factory German parts. Great gun because of the modularity. Some people think that the polygonal barrel the was briefly offered on the 91 in the late 70s is the one to get if you can find one but based on overall limitations in the system as a whole I personally do not think the extra cost (these command a premium) is worth it unless you are a collector.

    The real issue imho with buying a 91 now is that some people treated them poorly by beating the crap out of them resulting in surface damage particularly when installing the craw scope mount, the case deflector/carry handle and the heavy bipod (only for use with the slim forearm).

    The bigger problem is that the internals are prone to corrosion and pitting if not cleaned properly and it seems a lot of people bought these guns, shot them and put them away dirty for a decade or 2 - more so then with other guns - and it can really ruin an otherwise great rifle. I have seen numerous examples which looked very good on the outside but mucked up on the inside as a result.
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    Finishes:

    1. black finish (1974- early 1976)(classic smooth)
    2. blue-grey finish (mid-1976- 1982)(smooth and shiny)
    3. 1983-1984 (none imported)
    4. black finish (1985-1988)(smooth but more matte)
    5. NATO black finish (1989)(deep and rich)

    All will shoot the same, if not abused, and maintained properly.

    Tony
    Last edited by AGG; 02-21-2020 at 01:35 PM.

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    I like the IB date coded 91 but that's just me

    MSG90 clone
    HK91 Questions for Owners-dscn0359.jpg


    PSG1 clone
    HK91 Questions for Owners-dscn0367.jpg
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    Quote Originally Posted by AKR* View Post

    The bigger problem is that the internals are prone to corrosion and pitting if not cleaned properly and it seems a lot of people bought these guns, shot them and put them away dirty for a decade or 2 - more so then with other guns - and it can really ruin an otherwise great rifle. I have seen numerous examples which looked very good on the outside but mucked up on the inside as a result.
    Is it the bolt head & carrier, the trigger pack internals, or the inside of the receiver that corrodes?

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    Quote Originally Posted by AGG View Post
    Finishes:

    1. black finish (1974- early 1976)(classic smooth)
    2. blue-grey finish(mid-1976- 1982)(smooth and shiny)
    3. 1983-1984 (none imported)
    4. black finish (1985-1988)(smooth but more matte)
    5. NATO black finish (1989)(deep and rich)

    All will shoot the same, if not abused, and maintained properly.

    Tony
    Thank you for this list. Thais will help me out a lot comparing the colors. I was born in 78 so have really been looking for a HI but haven’t even seen one yet.

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    Quote Originally Posted by wallew View Post
    I like the IB date coded 91 but that's just me

    MSG90 clone
    Click image for larger version.

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    PSG1 clone
    Click image for larger version.

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    Very nice. I like that MSG90 a lot. On the MSG90 Did HK weld the reinforcement bars on the sides of the receiver like the PSG1?

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    Quote Originally Posted by rc51pete View Post
    Is it the bolt head & carrier, the trigger pack internals, or the inside of the receiver that corrodes?
    It's the area around the barrel trunnion and back.
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    Quote Originally Posted by rc51pete View Post
    Very nice. I like that MSG90 a lot. On the MSG90 Did HK weld the reinforcement bars on the sides of the receiver like the PSG1?
    Yes, they are mechanically different guns. Different bolts, reinforcing tabs, totally different scope mounting systems, etc. Wallew's aren't exactly clones as much as they are scoped 91's with some parts added.
    Last edited by freeride1; 02-20-2020 at 03:07 PM.

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    The bolt head is the first thing to get 'character', when ignored. The rest really doesn't rust much.

    The legacy of corrosive (read Czech) ammo can really ruin a gun if left to rot, tho.

    Yes on the welded 'stiffeners' on the MSG-90.

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