Discussion in 'Long Gun Accessories and Optics' started by Darth-Vang, Jul 25, 2021.
For a standard rifle, IMO, the best bayonet remains the M7. If you want a utility knife, go with the M9, but it's too heavy and clunky as a pure bayonet. The M9 is a "jack of all trades but master of none."
The only way to use a bayonet t with a 16" barrel without any adaptors is if it is a mid length gas system.
And @AlexanderA is correct. The M7 is the better bayonet while the M9 is a better all purpose knife.
M9 if you want bells and whistles and gizmos of limited utility (do you really need a sub-par wire cutter that requires you to dismount the scabbard?)
You will need an adapter for that MP 15 2, or the muzzle ring will just rattle around pointlessly.
(On a 20" standard-length rifle barrel, the muzzle device will be the correct distance to the bayonet lug.)
Bayonet on an M4 (or clone thereof) is a bit like the bayonet on a FAMAS--a pointy bit for "show." Which did not deter the French from issuing them (and it's hard to argue that the Foreign Legion managed both panache and elan with theirs).
The M9, L1, and other "Bowie"-type blades are really not that great as stabbing knifes.
A person would have to ask why you would be concerned with what the OP asks about.
I like the M9, but I am more of a knife guy than a bayonet guy.
Edited to add: very nice sheath too, probably my favorite.
I would have to be concerned with why a bayonet when there were so many other useful things for a AR. I guess I am allowed to wonder why.
People collect bayonets for old milsurps, so why not collect bayonets for more modern rifles?
Of course, some folks might collect bayonets without the rifle, but this is a gun forum so one might as well get the rifle too.
If for collecting, then... it still depends. M7 would be Vietnam to today depending on which branch. M9 for Army since the 80s, and Marines from the same timeframe to... sometime then it was replaced with the OKC-3S. Or... then the often entirely different bayonets adopted by other countries entirely.
For completeness (have all the bits for your rifle) then maybe several?
If for use, sharpen it or more likely get it sharpened. The M9 especially comes not at all sharp, so is useless as an actual cutting implement, and you have to remove a LOT of metal to get a knife edge out of it, so get someone who knows how to use their wheel to put an edge on a knife, and won't mess it up either.
Weight of ammo is usually not an issue when using a bayonet. By the time you have to fix bayonets, you are out of ammo. To be honest I never used my bayonet mounted outside of basic training though it was always with me in combat.
And having a bayonet to go with your military rifle is a very good reason to me. I had my M7 sitting around since I retired and decided to build an A2 clone for it.
And people will argue over how many kwatloos ought be spent on one, too.
And that one guy will be all wrong all day, too 
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