Qualified Sear and B&T QD Suppressor
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Thread: Qualified Sear and B&T QD Suppressor

  1. #1
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    Default Qualified Sear and B&T QD Suppressor

    I finally got a chance to shoot my HK MP5-N with my newly approved Qualified Sear in a NAVY pack and B&T QD suppressor the other week. I first ran 4 mags of 147gr Fiocchi with the B&T suppressor and it ran great and was nice and quite. I was a little surprised on the amount of blow back as it blew some oil/carbon on my finger and hand from the trigger pack and I don't heavy coat my parts in oil like some. And the suppressor sure made the inside of the gun and pack dirty as crap. I shoot about 7 mags with 124gr NATO and it ran fine with no malfunctions. I like shooting suppressed but hate the amount of carbon it puts on the receiver and parts, but that is just the trade off of using one. Glad I purchased an ultra sonic cleaner for the internal parts. Over all it ran like a sewing machine with absolutely no issues.

    I took my 33K out the next day and shoot 5 mags and it ran perfectly with no issues. I was able to steadily fire 3rd burst which was nice and controllable. I have an AAC Blackout flash hider on it for use with a M4-2000 but did use it that day, next time. However not looking forward to the amount of blow back I'm sure will be had to deal with.
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    Thanks for the report--- getting dirty is the nature of the beast--- but well worth it!!!

    Tony

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    I took my MP5-N out again yesterday but I wiped the inside of the receiver with FireClean and then took a clean patch and wipe off the excess. I ran 5 mags suppressed and 6 mags unsuppressed. When I got back home to clean it I was amazed at how easy the carbon came off the receiver. I used some of the Breakthrough solvent as the Outers was to strong for my sinuses and it did a great job removing the carbon. I put the bolt group parts in my ultrasonic cleaner with some Slips 2000 on 130 degrees for 40 minutes.
    Last edited by Jack_Bauer; 12-23-2019 at 02:37 PM.

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