M1A flash suppresser

[Major Tom]

I would like to buy one of these WITH bayonet attachment lug. But, where? How hard is it to install?

[lyman]

you loosen the allen screw, (does not need to come all the way out) use your castle nut pliers to loosen the nut and in doing so, remove the FH, and repeat to replace,

various places on the net have them,
midwest shows them instock

[kj47]

Got mine from LRB, easy peasy to change out.

[barretcreek]

Took a while to find a bayonet lug for an 870, with ext mag.