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Thread: Out with the MP5s and in with the...Rock River M4?

  1. #1
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    Out with the MP5s and in with the...Rock River M4?

    So our unit has finally exhausted parts supplies and most of the ammo for our beloved MP5s and the M4s are on the way up from the firearms division at Quantico. I really haven't seen specs or much other than they are Rock River (?) and come with Eotechs.

    After being on this forum for a while and doing a LOT of reading and researching, I bought a BCM for my personal use a couple of years ago and have never seen or read anything that would make me want to own a RR. But they must have been on the cheap for the Bureau to be buying them for us.

    So what exactly do I look for so I'll feel comfortable relying on this thing while I'm at work. I do carry my BCM with me everyday when I am traveling to and from work, but would get into hot water, I am sure, if I used it while on duty.

    I have a pretty basic knowledge of the AR and know how to clean it and maintain it but never felt the need to inspect the stuff that I know is done properly on the BCM. I have no such warm fuzzy with these new issued weapons though.

    Are there any photos/links for dummies on what exactly I should check?

    Thanks in advance
    "Why "zombies"? Because calling it 'training to stop a rioting, starving, panicking, desperate mob after a complete governmental financial collapse apocalypse' is just too wordy." or in light of current events: "training to stop a rioting, looting, molotov cocktail throwing, skinny jeans wearing, uneducated bunch of lemmings duped by, or working directly for, a marxist organization attempting to tear down America while hiding behind a race-based name"

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    What you can do with an agency gun will obviously differ from privately owned. As will the specs and standards it may have already been subjected to. That said, this thread has been pretty handy for a lot of folks and offers much.

    "Oh No! I bought a BM/RRA/Stag before I knew better!"
    https://www.m4carbine.net/showthread...w-better!-quot

    A few dozen of the RRA gov models I see were problematic on arrival, but have since been fixed and do okay. A similar quantity of another RRA commercial variant also do okay now, after staking, reaming, and inspection.
    2012 National Zumba Endurance Champion
    الدهون القاع الفتيات لك جعل العالم هزاز جولة الذهاب

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    One of my current carbines is a Rock River. I have put a few thousand rounds through it with no issues.

    Several of our swat cops bought RRA guns several years ago. Many of them have shot the hell out of them without problems.

    Not my first choice, but I wouldnt lose sleep if I was issued one.

  5. #5
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    It's like any other gun. Inspect it and if anything's wrong bring it up to your armorer chain's attention.

    I took custody of 1200 USG-purchased select-fire Rock River M4geries for an allied Special Forces unit. They all go bang.

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    Quote Originally Posted by Skintop911 View Post
    What you can do with an agency gun will obviously differ from privately owned. As will the specs and standards it may have already been subjected to. That said, this thread has been pretty handy for a lot of folks and offers much.

    "Oh No! I bought a BM/RRA/Stag before I knew better!"
    https://www.m4carbine.net/showthread...w-better!-quot

    A few dozen of the RRA gov models I see were problematic on arrival, but have since been fixed and do okay. A similar quantity of another RRA commercial variant also do okay now, after staking, reaming, and inspection.
    I saw this with two local agencies shooting XM193 through RRA .223 chambers. After reaming the chambers to 5.56mm, they ran well. I am currently running a chrome lined 5.56mm RRA barrel on one of my carbines and it eats anything I shoot through it.
    Train 2 Win

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    Don't sweat it brother. My agency issues us Bushmaster Patrolman Carbines and we have survived about the past 7 years with them. It does suck to leave my Spikes/PSA Premium middy or LE6920 home while trusting in the lesser weapon, but truth be told... Our Bushies have been good to us. I have no doubt that the Rock River will get the job done.

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    If its feasible, I would personally feel a bit more comfortable dropping a complete BCM or Colt BCG in the thing. If you are not allowed to do the aforementioned, what about purchasing a BCM sopmod bolt upgrade/ rebuild kit and installing it on the existing bolt? The BCM bolt rebuild kit would head many potential issues off at the pass, so to speak. Here is a link to the above-referenced kit: http://www.bravocompanyusa.com/BCM-S...rade%20kit.htm
    Best of luck, copper

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    Thank you very much. I learned more about this stuff in the last 1/2 hour with your links than I could have imagined. Really interesting that some companies choose not to do these things. Nothing in the list seems very cost intensive, if done at the factory level.

    Extra cost has to be the reason why, no?
    "Why "zombies"? Because calling it 'training to stop a rioting, starving, panicking, desperate mob after a complete governmental financial collapse apocalypse' is just too wordy." or in light of current events: "training to stop a rioting, looting, molotov cocktail throwing, skinny jeans wearing, uneducated bunch of lemmings duped by, or working directly for, a marxist organization attempting to tear down America while hiding behind a race-based name"

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    Quote Originally Posted by joeyjoe View Post
    If its feasible, I would personally feel a bit more comfortable dropping a complete BCM or Colt BCG in the thing. If you are not allowed to do the aforementioned, what about purchasing a BCM sopmod bolt upgrade/ rebuild kit and installing it on the existing bolt? The BCM bolt rebuild kit would head many potential issues off at the pass, so to speak. Here is a link to the above-referenced kit: http://www.bravocompanyusa.com/BCM-S...rade%20kit.htm
    Best of luck, copper
    "Copper". Classic
    "Why "zombies"? Because calling it 'training to stop a rioting, starving, panicking, desperate mob after a complete governmental financial collapse apocalypse' is just too wordy." or in light of current events: "training to stop a rioting, looting, molotov cocktail throwing, skinny jeans wearing, uneducated bunch of lemmings duped by, or working directly for, a marxist organization attempting to tear down America while hiding behind a race-based name"

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