Results 1 to 10 of 10
  1. #1
    Moderator jasons's Avatar
    Join Date
    Aug 2009
    Location
    Melrose, MA
    Posts
    12,872

    Default Knoxx recoil-reducing stock mini-review (Mossberg 500 / 600)

    I recently found a pretty good deal on an open-box (but apparently never used) Knoxx recoil-reducing collapsible stock for a Mossberg 500, so I grabbed it. I wanted to write up a quick mini-review.

    First impressions - nice quality. The stock and forearm are made of some sort of glass reinforced plastic that seems very solid. It definitely feels stronger and more substantial than the stock black plastic stocks that come on most Mossbergs. The springs used for recoil reduction are very stiff and it takes a lot of pressure to get them to move at all. It came with a long ball-end allen wrench and decent instructions.

    Installation - (Note - I installed on a "New Haven by Mossberg 600AST," that I picked up used for short money. The 600 is basically a store brand version of a 500.)

    Installing the stock was super easy. Remove the butt plate / pad on the old stock and then unscrew the one stock screw (you need a long screwdriver for this.) Then, remove the sliding portion of the new stock, line up the included bolt, use the included allen to tighten, and reinstall the sliding portion. Easy stuff, took maybe 10 minutes tops.

    The forearm was a different story. It looks like they use the same forearm for many different models of shotgun, and as such the fit was not great out of the box. It was a VERY tight fit just to get it on and I needed to do a ton of dremel work to get enough clearance for the forearm nut to fit right. I used a small sanding wheel and just started to clearance out a little bit at a time. Sand a little, test fit, sand some more, repeat. Once I got the fit pretty close I used a plummer's torch to (carefully) smooth out and clean up the jaggy plastic shavings. This took me probably about an hour. (All the dremel work was inside where it's not visible so it looks fine.)

    Test fire - I screwed on the new 18.5" barrel that I got online and went out to the woods behind DanG's house for some testing. I also brought my unmodified Mossberg 500 with the standard black plastic stock and forearm for comparison. For shells I used some Winchester White Box #8 lead shot (100 round bulk pack on sale for $24.95 at Dicks.)

    The stock feels pretty good. The recoil reduction was noticeable but not dramatic. The adjustable part is very solid and doesn't wiggle or rattle at all. The pistol grip is about perfect for my medium-sized hands - a bit bigger than a stock AR pistol grip but not huge. (I find the stock AR grips a bit small.)

    Overall, I like it a lot. I'm going to try to find a place to test some bigger shells this weekend, I expect the recoil reduction will be more significant as the power ramps up. For the $90 bucks that I paid I think it was a great deal and I consider it money well spent.

    -JasonS

    Last edited by jasons; 10-15-2009 at 03:48 PM.

  2. #2
    NES Member joehaus's Avatar
    Join Date
    Oct 2006
    Location
    near woostah
    Posts
    1,080

    Default

    Nice. I have been contemplating buying one of these for a long time.
    Stay armed. Stay safe.

  3. #3

    Default

    I bought one for a Rem 870 Police shotgun that I bought last year. I have a bad shoulder (torn rotator cuff some years ago) so I notice recoil in a sometimes painful way. Shooting the gun with the plastic stock, using 00 Buck and slugs, I could feel it after a box or two.

    Put the Knoxx recoil-reducing stock on and I could probably shoot it all day w/o any pain. Great product and highly recommended.

    I don't think that skeet/trap loads have much recoil anyway, which would account for why the OP didn't feel much difference. Ramp up to 00 or slugs and you should see a bid difference.

    I didn't replace the forearm as the gun I bought came with a Surefire forearm/light.
    Mass. Gun Laws By and For Non-Lawyers (How To Stay Legal and Out of Trouble) - Seminar
    http://home.comcast.net/~safety-instructor

    NRA Certified Instructor and Range Officer

    We have met the enemy and he is US!

  4. #4
    NES Member exodious's Avatar
    Join Date
    Mar 2009
    Location
    Berkshires
    Posts
    5,343

    Default

    Something to keep in mind that I wasn't aware of the first time I shot with one of those stocks... The collapsible part is nice, but don't shoot it like a rifle if you collapse it all the way down. Your face will thank you

  5. #5
    Moderator jasons's Avatar
    Join Date
    Aug 2009
    Location
    Melrose, MA
    Posts
    12,872

    Default

    Quote Originally Posted by exodious View Post
    Something to keep in mind that I wasn't aware of the first time I shot with one of those stocks... The collapsible part is nice, but don't shoot it like a rifle if you collapse it all the way down. Your face will thank you

    lol. That's what we call a "self-correcting error."

    That is covered in the manual by the way.
    http://www.blackhawk.com/Catalog/Doc...x?versionid=29

  6. #6
    NES Member exodious's Avatar
    Join Date
    Mar 2009
    Location
    Berkshires
    Posts
    5,343

    Default

    Quote Originally Posted by jasons View Post
    lol. That's what we call a "self-correcting error."


    Too bad I don't have a self-correcting face

  7. #7
    NES Member Horrible's Avatar
    Join Date
    Mar 2009
    Location
    Central MA
    Posts
    4,058

    Default

    Jasons. Thanks for posting this. I just purchased one of these myself (for Mossy 500) and haven't had a chance to try it out. Good to know that it works well. Also thanks for the tips on the forearm (I may just leave the factory one on).
    Congress have no power to disarm the militia. Their swords, and every other terrible implement of the soldier, are the birth-right of an American ... the unlimited power of the sword is not in the hands of either the federal or state governments, but, where I trust in God it will ever remain, in the hands of the people. - Tench Coxe


  8. #8
    Registered User
    Join Date
    Jun 2007
    Location
    Utah
    Posts
    1,255

    Default

    Good review jasons. One thing to note is that it does take a little break-in time for the spring built into the stock. I didn't start noticing significant recoil reduction until I went threw about 20 or so 1 oz slugs.

  9. #9
    NES Member Navy Moose's Avatar
    Join Date
    Aug 2008
    Location
    Live Free or Die!
    Posts
    3,908

    Default

    I have this stock on my Mossberg 590A1 and I put almost 75 shells through this weapon at TVI's shoot in June and my shoulder felt fine at the end of the day.
    Life Member NRA
    Member of Pro Gun NH
    Member of Horseshoe Fish and Game
    NRA Certified Range Safety Officer
    NRA Certified Basic Pistol, HFS, and PPIH Instructor

    Originally Posted by drgrant
    "I think this thread has about had it..... it's only gone full retard, circumnavigated the globe a few times, and then ended up at the Internet Special Olympics.... for the 2nd time"

  10. #10
    NES Member Gonzo's Avatar
    Join Date
    Oct 2008
    Location
    Live Free or Die
    Posts
    4,083

    Default

    I have the pistol grip knoxx on a 500. Makes it feel like a .45 and doesn't make you go all limp-wristed by the end of the day.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •