HK91 / G3 / HK51 Sights / Optics / Mounts

HK91 / G3 / HK51 Sights / Optics / Mounts

Maximize your G3/91's accuracy potential. Find classic HK diopter sights, scope mounts, rail adapters, and premium optics from leading brands.

 

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  • New - MFI HK MP5/G3/93 Micro Low Mount - HKP-17962 HK MP5, G3, 93 Optic Mount - Micro Low
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    HK MP5, G3, 93 Optic Mount - Micro Low

    MFI

    $110.95
    HKPARTS 2025 MFI Micro 1913 Picatinny Rail Scope Mount for HK MP5/94/G3/91/93 This mount allows for installation without completely removing the screws from the mounting claws. The claws can remain attached to the bolt or screw, allowing the entire...
    $110.95
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  • On Sale
    New - MFI Universal Low Profile Scope Mount - HKP-00762 HK MP5 Optic Mount - Low Profile - Picatinny
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    HK MP5 Optic Mount - Low Profile - Picatinny

    MFI

    Now: $112.45
    Was: $124.95
    MFI's crafted HK MP5 Series Mount - Low Profile Scope - Universal MFI's universal mount will fit all models from 9mm through .308. The sleek design allows the operator to flip the scope mount in either direction without blocking the ejection port (MP5...
    Now: $112.45
    Was: $124.95
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    Was: $124.95
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  • On Sale
    New - MFI HK G3, 91, 93, 33 PTR & MP5 Scope Mount - Windowed - HKP-02708 HK MP5, HK91, G3, HK33, HK93 Optic Mount - Windowed
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    HK MP5, HK91, G3, HK33, HK93 Optic Mount - Windowed

    MFI

    Now: $112.45
    Was: $124.95
    MFI HK G3, 91, 93, 33 PTR & MP5 Scope Mount - Windowed This model is the same as the best-selling low-profile mount, only with added windows for extra weight savings and a viewing window to see the serial numbers on the MP5/94 series of...
    Now: $112.45
    Was: $124.95
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    Was: $124.95
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  • On Sale
    New - HKP HK MP5 Picatinny Rail Optic Mount - Raised - HKP-21489 HK MP5, MP5K Optic Mount - Raised - Picatinny Rail
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    HK MP5, MP5K Optic Mount - Raised - Picatinny Rail

    HKP HK Parts

    Now: $87.96
    Was: $109.95
    HKP HK MP5 Picatinny Rail Optic Mount HK Parts Picatinny style optic mount for the MP5 or MP5K.  Quickly mount any Picatinny optic to your HK while retaining a full view of the factory sights. Available exclusively at HK Parts. Compatible With: HK...
    Now: $87.96
    Was: $109.95
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    Now: $87.96
    Was: $109.95
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  • On Sale
    New - HKP HK MP5/K Aimpoint ACRO Sight Mount - HKP-21229 HK MP5, MP5K Optic Mount, Aimpoint ACRO P-1, P-2
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    HK MP5, MP5K Optic Mount, Aimpoint ACRO P-1, P-2

    HKP HK Parts

    Now: $79.16
    Was: $98.95
    HKP - HK MP5, MP5K Mount - Sight - Aimpoint ACRO - ACRO P1 & P2 The HK Parts Aimpoint ACRO low-profile mount is perfect for shooters seeking a minimalistic mount with an absolute co-witness.  Crafted in the US from aircraft grade aluminum and...
    Now: $79.16
    Was: $98.95
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    Now: $79.16
    Was: $98.95
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  • On Sale
    New - B&T G3/91, 33/93, MP5/94 - Universal Scope Mount - HKP-16878 HK MP5, HK91, G3, HK33 Optic Mount - Picatinny
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    HK MP5, HK91, G3, HK33 Optic Mount - Picatinny

    B&T Brugger & Thomet

    Now: $108.00
    Was: $120.00
    B&T G3/91, 33/93, MP5/94 - Universal Scope Mount Specifitacions: Color: Black Height max: 35.5 mm Length max: 138 mm Length of top rail: 138 mm Material: Aluminum MSN: 5340-25-149-2979 NATO Accessory Rails: 1 Part number: BT-21262-1 Treatment:...
    Now: $108.00
    Was: $120.00
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    Now: $108.00
    Was: $120.00
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  • On Sale
    New - Blitzkrieg HK MP5 Spike Front Sight Gen 2 - Luminescent Green - HKP-21097 Blitzkrieg  HK MP5 Spike Front Sight Gen 2 - Luminescent Green
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    Blitzkrieg HK MP5 Spike Front Sight Gen 2 - Luminescent Green

    Blitzkrieg Components

    Now: $79.16
    Was: $87.95
    Blitzkrieg HK MP5 Spike Front Sight Gen 2 - Luminescent Green The Blitzkrieg Gen 2 HK-style front sight is engineered to deliver a precise and visible aiming point, enhancing target acquisition and accuracy. This model features a spike-tipped post and a...
    Now: $79.16
    Was: $87.95
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    Was: $87.95
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  • On Sale
    New - XS Sight Systems Trituim Front Night Sight 90 Series Standard Dot - HKP-19602 HK 90 Series Night Sight - Front - Tritium - Standard Dot
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    HK 90 Series Night Sight - Front - Tritium - Standard Dot

    XS Sights

    Now: $83.66
    Was: $92.95
    XS Sights Tritium Night Sight  - Standard Dot Standard Dot front sights use a patent-pending glow dot that absorbs light and glows in low light levels before it is dark enough to see the tritium. Green is a great option for low light and has a very...
    Now: $83.66
    Was: $92.95
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    Was: $92.95
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  • New - Meprolight HK MP5, G3, 33, PTR, SP5 Night Sight Set - HKP-02564 Meprolight HK MP5, G3, 33, PTR, SP5 Night Sight Set
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    Meprolight HK MP5, G3, 33, PTR, SP5 Night Sight Set

    Meprolight

    $109.00
    Meprolight HK MP5, G3, 33, PTR, SP5 Night Sight Set  Meprolight produces a bright green night sight available for Heckler & Koch sub guns and rifles. These tritium night sight inserts are a no-brainer for a quicker, more accurate point-and-shoot...
    $109.00
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    $109.00
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  • On Sale
    New - B&T MP5, HK33, G3, PTR - Mid Range Mount - HKP-16882 HK MP5, HK33, G3 Optic Mount - Mid Range
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    HK MP5, HK33, G3 Optic Mount - Mid Range

    B&T Brugger & Thomet

    Now: $116.95
    Was: $129.95
    B&T MP5, HK33, G3, PTR - Mid Range Mount This scope mount will allow the the use of the HK fixed sights (through an oval opening) and also allowing the optic to sit higher thant the front sight tower for an unobstructed view. This will allow the use...
    Now: $116.95
    Was: $129.95
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    Now: $116.95
    Was: $129.95
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  • On Sale
    New - B&T HK G3/91/PTR Low Profile Mount - Short Version - HKP-16869 HK91, G3 Optic Mount - Low Profile - Short Version
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    HK91, G3 Optic Mount - Low Profile - Short Version

    B&T Brugger & Thomet

    Now: $130.45
    Was: $144.95
    B&T Mounting Rail NAR Low Profile Mount For HK G3, 91, PTR, Short Version Compatible With: HK G3 HK91 PTR91 Specifications: Overall length: 3.25"
    Now: $130.45
    Was: $144.95
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    Was: $144.95
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  • Out Of Stock
    New - Trijicon 90 Series Front & Rear Night Sight Set - HKP-00373 Trijicon 90 Series Front & Rear Night Sight Set

    Trijicon 90 Series Front & Rear Night Sight Set

    Trijicon

    $124.95
    Trijicon 90 Series Front & Rear Night Sight Set Trijicon produces the brightest night sights available for Heckler & Koch sub guns and rifles. These tritium night sight inserts are a no-brainer for quicker, more accurate point-and-shoot...
    $124.95
    Out Of Stock
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    $124.95
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