Will the standard 20" length 590A1 (51663) accept a bayonet (M9)? Does it come ready for the bayonet or is anything extra required to do this?
Thanks
http://www.mossberg.com/product/shotguns-pump-action-mossberg-590a1-special-purpose-590a1/51663Yes, the standard 590A1 comes with the bayonet mounting bracket.
http://www.mossberg.com/product/shotguns-pump-action-mossberg-590a1-special-purpose-590a1/51663
Will the standard 20" length 590A1 (51663) accept a bayonet (M9)? Does it come ready for the bayonet or is anything extra required to do this?
Thanks
If you talk to Ontario, you will find that all of their bayonets - the M9, M10, OKC3S, etc., have identically the same distance between the guard center and the latch center, which is 5.00" exact. So if you encounter difficulty in mounting a bayonet from Ontario, the tolerance error is probably with the gun (+/- 1/16 inch). As you can see, that can be as much as 1/8" total error. That happened on my 590SP, so I had to make a minor adjustment on my gun. (I added a shim to the magazine cap).
I ended up choosing the OKC3S as it is longer (8") and meaner -- scary sharp.
While I don't think that is perfect, it is certainly better than the USMC bayonet. I think the easy answer is that bayonets may-or-may-not fit both the rifle and the shotgun.
I wonder if the M7 bayonet fits any better. They all appear to be about 1/8" to long.
Dave
As you can see, some people (not all) have a tolerance issue -- and it always is on the side of the bayonet being too long. As both Mossberg and Ontario recommend the M9 bayonet for the 590a1 (or 590 SP) shotguns, logic says that you should have the best chance of success with the M9 right out of the box.
But having said that, please review my earlier post as the Ontario technical department was adamant about the dimensions I posted. And interestingly, my OKC3S was too long for my 590 by 1/8". And yet it has the exact dimension of 5.00" between the centerlines of the guard and the latch that Ontario specifies. Before I purchased the Ontario blade, I tried a S&W version and it was too long, so I returned it. With two bayonets from two different companies being too long, I concluded that the tolerance error is probably with my 590.
If we can get enough people here to participate -- we can do our own tolerance range check. I just measured from the front end of the magazine cap back to the rear edge of the bayonet latching tabs (that protrude out on both sides of the bayonet lug) and got exactly 4.90".