Modding my first shotgun, a Shockwave 590M
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Thread: Modding my first shotgun, a Shockwave 590M

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    Default Modding my first shotgun, a Shockwave 590M

    So I finally invested in my first shotgun. I wanted to get something compact that would work well in a home defense situation. After conferring with a dealer I trust, I ended up going with the Shockwave 590M version (the magazine fed configuration). Here's where I started.
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    But, this wasn't where I wanted the overall configuration to be. So, the following modifications were made:
    1. Top rail
    2. Holo sight
    3. SBA3 arm brace
    4. Front flashlight mount
    5. Light
    6. Ergonomic safety

    After all that, here's where it landed. I'm pretty happy with it now. This configuration also keeps it non-NFA, non-AOW.
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    Coalcracker and gvaldeg1 like this.

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    The end product appears much more manageable than the "original". Good job.

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    Senior Member NGF Addict! square target2's Avatar
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    I like it! Bet it's a whole lot easier to use like that.

    BTW when you have a mag on there is the tube still usable as well? Would be cool if you could fill the tube and when the mag is empty you can feed from the tube.
    And armed man is a free man, a disarmed man is a slave.

    Epstein didn't kill himself.

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    Quote Originally Posted by Stevejet View Post
    The end product appears much more manageable than the "original". Good job.
    Yeah. With the original grip in particular, it feels sort of like a spray and pray kind of gun. And this is the 12ga version, so it has a pretty good kick. That's just not a safe way to go about home defense IMO. Now it's something I'm confident grabbing and knowing exactly what the plan is.

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    Quote Originally Posted by square target2 View Post
    BTW when you have a mag on there is the tube still usable as well? Would be cool if you could fill the tube and when the mag is empty you can feed from the tube.
    Unfortunately, no. The tube is effectively functionless, aside from the mag tube cap still being responsible for holding the barrel on. It's just empty and hollow inside though, and the receiver has the magazine release pinned in where the tube would otherwise feed in. Theoretically you could use it to hold some extra shells in a pinch, but I have both 10 and 20 shell magazines for it. If I'm in a home defense situation and go through even 10 shells, I'm probably already in trouble.

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    I like it. Question was it cheaper to mod than buying an AR style shotgun? I have a Stevens 320 for home defense. Like the one in the pic.
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    Quote Originally Posted by Coalcracker View Post
    I like it. Question was it cheaper to mod than buying an AR style shotgun? I have a Stevens 320 for home defense. Like the one in the pic.
    Probably not, though the mods aren't all that expensive. The most expensive piece was the arm brace at about $169. The holo sight is a cheap Chinese job (pinpoint accuracy isn't exactly a need for a home defense shotgun), and I already had the light. I paid $600 base for the gun, BUT, that deal included 6 of the 20 round magazines (no real reason on that, I think they were just getting rid of the stock so they wanted to make me a deal to take it all), some shells, and an accessory for another gun. So between the mags and other stuff, that by itself is roughly $500 in retail aside from the gun.

    If we fudge the numbers, say I paid low retail at $350 for the gun, plus what I did to it, and I'm basically all in at about $628-ish.

    But, what I am getting is a shorter gun with double (or quadruple with a 20 shell mag) the capacity, too. The 590M is nearly 4 inches shorter on the barrel than the Stevens. That's a much better length to move down hallways and around doors.
    Coalcracker likes this.

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    I have no problem with anyone making modifications they like as long as it's legal. Their gun -- their money. It just doesn't make sense to me to buy a gun specifically without a stock then adding one.

    If you want to argue economics a Maverick can be had for less than $200. If you want a shorter barrel you could get one or saw it off yourself.
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    Quote Originally Posted by Coalcracker View Post
    I like it. Question was it cheaper to mod than buying an AR style shotgun? I have a Stevens 320 for home defense. Like the one in the pic.
    I'm thinking an 870 would have been around $400.

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    Quote Originally Posted by fixitfred View Post
    I have no problem with anyone making modifications they like as long as it's legal. Their gun -- their money. It just doesn't make sense to me to buy a gun specifically without a stock then adding one.

    If you want to argue economics a Maverick can be had for less than $200. If you want a shorter barrel you could get one or saw it off yourself.



    The reason for the shockwave is to legally have a barrel under the legal 18" law and. The shockwave has a 14" barrel but it's still 26" in overall length so it's legal as a "firearm"
    And armed man is a free man, a disarmed man is a slave.

    Epstein didn't kill himself.

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