Why sell an AR with a lug on the barrel if no bayonet is available for it?

They made into a decent dagger, slept with one under my pillow in Vietnam, always carried it during the day.
 
If you pin and weld an A2 flash hider on a 14.5 you should have the correct length for a bayonet. I say "should" because there can be tolerance issues. Mock it up and shim as necessary.
 
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They make 16" barrels that will take a standard bayonet. You just have to have the correct upper. Personally, I couldn't care less, but I have one AR that takes them. And I have a couple of bayonets for collectable purposes. I've never put it on there, other than for photographic purposes.
 
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They make 16" barrels that will take a standard bayonet. You just have to have the correct upper. Personally, I couldn't care less, but I have one AR that takes them. And I have a couple of bayonets for collectable purposes. I've never put it on there, other than for photographic purposes.
16" barrel with mid-length gas system. My favorite configuration of all. 👍
 
The bayonet lug is part of the classic AR front sight & gas block assembly. Millions of them in inventory.

I am disappointed there aren't any aftermarket doodads made using the bayonet lug as a mounting point.

Added: if you have all your m-lok and picatinny slots occupied, there's still the sadly neglected bayonet lug.
 
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Silly thing on an M-16, it isn't a good platform for bayonet fighting at all. It wasn't even taught in Advanced Infantry Training in 1969. It was issued in Viet Nam but I don't recall anyone ever carrying one. With all the stuff they made us carry why add the weight of something you would never use?
I was issued an M-14 first tour with a bayonet, second tour, M-16 no bayonet. I was in a Trans company on convoys.
 
Like a few others have said, a mid length gas system on a 16” barrel will accept a bayonet. This is due to the front sight being 2” closers to the end of the barrel.
Several people have asked me why I prefer a mid length gas system on a 16” barrel. #1 reason is smoother recoil. #2 less wear on the rifle. #3 longer sight radius. #4 two inch longer hand guard #5 you can mount a pokey thing on the front of the barrel.
Some might say that the mid length barrel doesn’t look mil spec, but the same goes for the 16” barrel.
There are many that see no need for a front sight post, and prefer a rail and mount a scope. But when it comes down to having a rifle for survival, I prefer a fixed front sight.
Here’s my favorite setup without the bayonet mounted. Didn’t feel like getting everything out just to take a new pic with the bayonet mounted. IMG_2551.jpeg
 
There are many that see no need for a front sight post, and prefer a rail and mount a scope. But when it comes down to having a rifle for survival, I prefer a fixed front sight.

I have my A2 clone in 5.56, a M4 clone in 6.8 SPC, a 16" M4 clone, and a 9mm AR. They all have the fixed front sight just for that reason. I run a removable carry handle on the A4 and of course the A2 uses the correct A2 upper. The 9mm uses a slick side 601 receiver. I do run a removable (fixed) rear sight and red dot on the 16" carbine though. All of my other AR's have high power scopes on them so no fixed front sights.
 
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I have my A2 clone in 5.56, a M4 clone in 6.8 SPC, a 16" M4 clone, and a 9mm AR. They all have the fixed front sight just for that reason. I run a removable carry handle on the M4 and of course the A2 uses the correct A2 upper. The 9mm uses a slick side 601 receiver. I do run a removable (fixed) rear sight and red dot on the 16" carbine though. All of my other AR's have high power scopes on them so no fixed front sights.
I have a few different ones also. B28E0888-62C2-453E-AF58-64024BB4BB03.jpeg
 
^^This.

Manufacturers just use the same front sight base for all barrel lengths.

If you think a bayo lug is useless on a 16" rifle...try it on an 11.5" gun (Colt 6933 barrel). :)

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See below.

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