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Reviews (8)

8 reviews for ARJ-M1 AR15 Receiver Set

4.9 Average Rating Rated ( 8 Reviews )

  1. Jeremy Konderla

    I ordered the ARJ-M1 receiver sets and they shipped very quickly. They showed up well packaged and look amazing. They fit together tight with no play between the upper and lower. I haven’t had a chance to build one out yet, but they appear to be high quality and are hands down one of the best looking receiver sets I’ve ever seen.

  2. John (verified owner)

    Super awesome receiver set, everything is made easy to put together and there’s zero play between the two receivers works great and they look absolutely phenomenal

  3. Michael Harrington (verified owner)

    This receiver set is one of the finest billet receiver sets I have ever had to work on. Everything fits perfectly no slop between the upper and lower and the threaded roll pins make putting the bolt catch and forward assist a breeze. No more messing around with those roll pins that always get lost when you’re trying to drive them in with a punch. These products are light and are of the highest quality I have ever worked on. I personally have seen there manufacturing facility and I was very impressed with the attention to quality control to make every single part to mil-spec and beyond. I will be a customer for life this company is a hidden treasure. Thank you ARJ defense.

  4. AdamT (verified owner)

    Excellent fit and play between receiver halfs and very nice details go into the machine work like raised sections align perfectly from upper to lower receiver..Extra reinforcement is done around fire control and breach, BCG to buffer housing is noticeably reinforced, the AR platform is highly improved with the use of a custom Billet from ARJ DEFENSE…You get well above the money level you spend ….
    I also bought the H1 rail to go with the M1 receivers for a perfect flow across the whole AR15 platform..Bought another set , will upgrade old builds using these affordable and high quality Receivers from ARJ DEFENSE..

  5. Sean Bean (verified owner)

    The fit and finish is excellent! The aesthetics are awesome.

  6. AdamT (verified owner)

    Bought another M1 set for another upgrade, this makes my 3rd upper lower combo from ARJ DEFENSE..So far it’s all been top notch quality , fit and finish..I highly recommend this brand over any other espy for the price to cost ratio..
    My builds using ARJ DEFENSE
    350 legend
    458 SOCOM

  7. Eric (verified owner)

    Nice looking finish with tight tolerances. It was an easy build. Would not hesitate to buy again.

  8. (verified owner)

    Pros: Beautiful Cerakote finish on the OD Green set. Also the price for the set was excellent. The upper went together without issue and looks great.

    Con’s: Because of the Cerakote finish the mil spec is off slightly when installing certain lower parts. Also the upper and lower wouldn’t mate without filing off the Cerakote where they mated. Additionally Cerakote had to be filed to install a few lower parts. Lastly the upper and lower fit so tight I had to use a hammer to set the pins that hold them together. It’s almost like the holes for the pins weren’t quite

    The build is finally complete and is scoped. I look forward to shooting the rifle.

    Note: I’m not new to building AR’s, this is my 12th.

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