PreMay MP5SD suppressor markings
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    Default PreMay MP5SD suppressor markings

    Tried searching but have not found anything that explains what the:
    S.Nr. and the W.Nr.

    markings on a factory suppressor stand for- designate. ASSume the S.Nr. would be the serial number but that does not match to the firearm or forms for the serial number? What does the W.Nr. "number" mean? Who decides what number to put on the form?
    Thanks

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    Weapon Number? Just a guess.

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    On WW2 German aircraft W.Nr. meant “work number”. It was a serial number assigned to aircraft.

    I bet that it means the same thing here - work number - but I have no idea what a “work number” was used for on SD suppressors.

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    Quote Originally Posted by akpj View Post
    Tried searching but have not found anything that explains what the:
    S.Nr. and the W.Nr.

    markings on a factory suppressor stand for- designate. ASSume the S.Nr. would be the serial number but that does not match to the firearm or forms for the serial number? What does the W.Nr. "number" mean? Who decides what number to put on the form?
    Thanks
    W.Nr. = Weapon Number (serial number of the rifle)
    S.Nr. = Serial Number (serial number of the suppressor)

    The serial number of the rifle may be S 96XXX, while the serial number of the suppressor may be 00X XXX.

    Tony
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    OK. Here is a picture of my Pre-Sample HK MP5SD suppressor. I don't see any "W.Nr." anywhere on it. Come to think of it, I have never seen that on any HK MP5SD suppressor.

    Post a picture of your HK MP5SD suppressor for a comparison.

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    Quote Originally Posted by MG34_Dan View Post
    OK. Here is a picture of my Pre-Sample HK MP5SD suppressor. I don't see any "W.Nr." anywhere on it. Come to think of it, I have never seen that on any HK MP5SD suppressor.

    Post a picture of your HK MP5SD suppressor for a comparison.

    I have seen 10 iterations of markings (oldest to newest):

    - HK MP5 SD/Cal. 9mmx19/Made in W-Germany/96XXX
    - HK MP5 SD Made in W-Germany/Cal. 9mmx19 HK Chantilly VA/S.Nr. 000 XXX/W.Nr. 097 XXX
    - HK MP5 SD Made in W-Germany/Cal. 9mmx19 HK Chantilly VA/serial/W.Nr. 097 XXX
    - HK MP5SD/Cal. 9mmx19/Made in W Germany/HK Inc Sterling VA/S.Nr. 000 XXX or 001 XXX
    - HK MP5SD/Cal. 9mmx19/Made in W-Germany/HK Inc. Sterling VA/S.Nr. 001 937; right- 63-1000XX
    - HK MP5 SD Made in W Germany/Cal. 9mmx19 HK Inc. Sterling VA/S.Nr. 002 65X
    - HK MP5 SD/Cal. 9mmx19/Made in W-Germany/HK Inc. Sterling VA/S.Nr. 002 68X
    - HK MP5 SD/Cal. 9mmx19/Made in Germany/HK Inc Sterling VA/01-003XXX and 01-0042XX
    - 63-106XXX/HK MP5 SD/Cal. 9mmx19/Made in Germany/Heckler & Koch Defense Inc./Ashburn VA/01-005XXX
    - 01-0089XX/HK MP5 SD Cal. 9mm x 19 DE 2017 (Austria)

    Tony
    Last edited by AGG; 05-03-2020 at 12:29 PM.
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    IK date code factory MP5SD, with matching suppressor.
    S.Nr is not same as the gun, but the last three of the gun number are engraved for matching to gun from HK.

    PreMay MP5SD suppressor markings-img_0877.jpg

    PreMay MP5SD suppressor markings-img_0878.jpg
    MP5A2, MP5SD, MP5-N, MP5K-PDW, G36K, G36E, Mk23, Mk23 Mod1, Mk24, USP45, P30L

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    Quote Originally Posted by saboteur7271 View Post
    IK date code factory MP5SD, with matching suppressor.
    S.Nr is not same as the gun, but the last three of the gun number are engraved for matching to gun from HK.

    Click image for larger version. 

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    Click image for larger version. 

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ID:	258782
    Very nice--- what trigger pack housing did it come with???

    Tony

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    I think it came with a 0-1-3-F, but I got it 11 years ago out of a PD. I switched it to a Navy ESSL, which is what I have on all of mine now.

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    Quote Originally Posted by AGG View Post
    I have seen 7 iterations of markings (oldest to newest):

    - HK MP5 SD/Cal. 9mmx19/Made in W-Germany/96XXX
    - HK MP5 SD Made in W-Germany/Cal. 9mmx19 HK Chantilly VA/serial/W.Nr. 097 XXX
    - HK MP5SD/Cal. 9mmx19/Made in W Germany/HK Inc Sterling VA/S.Nr. 000 XXX or 001 XXX
    - HK MP5SD/Cal. 9mmx19/Made in W-Germany/HK Inc. Sterling VA/S.Nr. 001 937; right- 63-1000XX
    - HK MP5 SD/Cal. 9mmx19/Made in Germany/HK Inc Sterling VA/01-003XXX and 01-0042XX
    - 63-106XXX/HK MP5 SD/Cal. 9mmx19/Made in Germany/Heckler & Koch Defense Inc./Ashburn VA/01-005XXX
    - 01-0089XX/HK MP5 SD Cal. 9mm x 19 DE 2017 (Austria)

    Tony
    Tony, you never cease to amaze me. Thanks so much for always sharing your just beyond incredible knowledge. It is unmatched.
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