HK416 / MR566 Small Parts

HK416 / MR566 Small Parts

Our selection includes every essential small part for your HK MR556 or HK416 rifle – pins, springs, detents, gas rings, firing pins, and more.

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  • New - H&K HK MR556/MR762/416 Dowel Pin - HKP-19528
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    HK416, MR556, MR762 Dowel Pin

    $9.95
    H&K HK MR556/MR762/416 Dowel Pin Compatible With: HK MR556 HK 416 HK MR762
    $9.95
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    New - H&K HK MR556/416 Ejector Spring - HKP-02538

    HK416, MR556 Ejector Spring

    H&K Heckler & Koch

    $39.99
    HK 416 & MR556 Ejector Spring Compatible With: MR556 HK 416
    $39.99
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    $39.99
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  • New - H&K HK 416 Roll Pin For 33mm Front Folding Sight - HKP-14144
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    HK416 Roll Pin For 33mm Front Folding Sight

    H&K Heckler & Koch

    $4.95
    HK 416 Roll Pin For 33mm Front Folding Sight This version is the enhanced (longer) roll pin for a more secure fitment. 
    $4.95
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    $4.95
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  • New - H&K HK 417/MR556/416/MR776 Pin Look Index - HKP-02639
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    HK416, HK417, MR556, MR762 Pin Look Index

    H&K Heckler & Koch

    $6.95
    H&K HK 417/MR556/416/MR776 Pin Look Index   Compatible With: HK MR556 HK 417 HK MR556  
    $6.95
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    $6.95
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  • New - H&K MR556 A4/416 A5 2.1mm Gas Vent Screw - HKP-22052
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    HK416 A5, MR556 A4 Gas Vent Screw - 2.1mm

    H&K Heckler & Koch

    $34.95
    H&K MR556 A4/416 A5 2.1mm Gas Vent Screw German 2.1mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    $34.95
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  • New - H&K 416 Front Takedown Pin - HKP-21862 HK416, MR556 - Takedown Pin - Front - A4 Style
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    HK416, MR556 - Takedown Pin - Front - A4 Style

    H&K Heckler & Koch

    $26.95
    H&K HK416, MR556 A4 Front Takedown Pin  The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...
    $26.95
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    HK416, MR556 Mag Catch - Ambi HK416, MR556 Mag Catch - Ambi

    HK416, MR556 Mag Catch - Ambi

    H&K Heckler & Koch

    $92.95
    H&K HK MR556, HK416 Mag Catch - Ambi Factory HK ambidextrous magazine catch/release. Compatible With: HK416 A5 HK MR556 A4 NOT compatible with earlier variants with single-side controls
    $92.95
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    $92.95
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  • New - H&K MR556 A4 Hammer Spring - HKP-22083
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    HK MR556 A4 Hammer Spring

    H&K Heckler & Koch

    $5.00
    H&K MR556 A4 Hammer Spring Genuine H&K hammer spring for the MR556 A4. Compatible With: HK MR556 A4
    $5.00
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    $5.00
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  • New - H&K MR556 A4/416 A5 2.0mm Gas Vent Screw - HKP-22051
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    HK416 A5, MR556 A4 Gas Vent Screw - 2.0mm

    H&K Heckler & Koch

    $29.95
    H&K MR556 A4/416 A5 2.0mm Gas Vent Screw German 2.0mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    $29.95
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  • New - H&K HK MR556/MR762/417 Index Pin Spring - HKP-17021
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    HK417, MR556, MR762 Index Pin Spring

    H&K Heckler & Koch

    $7.95
    H&K HK MR556/MR762/417 Index Pin Spring   Compatible With: HK MR556 HK 417 HK MR762  
    $7.95
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  • New - H&K MR556 A4/416 A5 1.8mm Gas Vent Screw - HKP-22049
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    HK416 A5, MR556 A4 Gas Vent Screw - 1.8mm

    H&K Heckler & Koch

    $29.95
    H&K MR556 A4/416 A5 1.8mm Gas Vent Screw German 1.8mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    $29.95
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  • New - H&K HK MR556/416 Full Auto Hammer - HKP-02673
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    HK416, MR556 Semi-Auto Hammer - Complete

    H&K Heckler & Koch

    $107.95
    H&K HK416, MR556 Semi-Auto Hammer - Complete Genuine German complete hammer and spring assembly.  Includes: Semi-auto hammer Hammer spring Side bushing Compatible With: MR556A1 MR556 A4 HK416 AR-15 AR-15 style semi-auto firearms chambered in...
    $107.95
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