G&R Tactical
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Thread: 8 .300 Blackout Hack-job

  1. #11
    Join Date
    Aug 2019
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    Love my 300 Blackout


    Sent from my iPhone using Tapatalk

  2. #12
    Join Date
    Feb 2019
    Posts
    43
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    Thanks for the compliments! I have put another couple hundred rounds through it. I have learned a few things. Tuning the lightweight carrier and .8oz buffer to cycle unsuppressed with subs leaves it very over gassed when shooting supers suppressed. Extraction was starting way to early and the extractor was leaving huge marks in the brass and in some cases even stretching the brass. An adjustable gas block instead of an adjustable gas key would be better for this setup however id like to avoid an adjustable gas block on this build so i made a new buffer that can accept 2 standard weights so i can load it up to 2.1oz 2.9oz or 3.6oz. Ill be playing around with that some more.

    Last time i shot i took another picture.


    Got some new parts in the mail yesterday, all PSA Custom bolt catch, safety, and mag release button. Shaved a few grams but more importantly bigger bolt catch extended mag release and ambi safety are all improvements in my book. Trying a different trigger as well, its from unbranded AR.



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