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Thread: Surefirex300u- A vs B for GLock 19?

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    Surefirex300u- A vs B for GLock 19?

    I am finishing up a roland special build for a gen3 19 and see there are two different mounting systems now, the model a and model b. Is there an advantage to one over the other when it comes to this weapon system? Gun will be riding in a RCS Perun.

    Thanks.

  2. #2
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    Either one will work, but the B would be “clone” correct.
    "We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm."

    - George Orwell

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    B is said to be more secure, while A is easier to remove. Iíve never had an issue with the A models staying on my guns, and they fit more holsters so thatís what I use.


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    Thank you. I'm wanting the most secure fit. Its going to be subjected to a lot of rounds.
    Last edited by jmoney; 09-23-18 at 06:49.

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    Never had an issue with the A model or any of the other X series lights staying secure on any of my Glock's, or any of the other weapons that I have them on, to date and I have been using SF X series lights since they were first introduced. I have had a few issues with the B series, but they aren't related to them staying on the guns. Either one will work, but based on your holster choice, the B model is what you want.
    "We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm."

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    Just don't bend your frame using the thumb screw on the B model.
    Reads a lot, posts little.

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    Quote Originally Posted by Vandal View Post
    Just don't bend your frame using the thumb screw on the B model.
    T4.

    Thanks for all the input guys.

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    Kinda late to this party, but the -A version is said to be better suited for polymer framed handguns.

    Quote Originally Posted by Vandal View Post
    Just don't bend your frame using the thumb screw on the B model.
    Would this be done by overtorquing the screw?

  9. #9
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    Quote Originally Posted by WTF?Shane View Post
    Would this be done by overtorquing the screw?
    That is exactly how this happens.
    "We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm."

    - George Orwell

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