Crush Washers...

AR/M4 AR Technical Discussion
1

Anyone know where I can purchase some crush washers for my A2 Birdcage Flash Hider, that have WRENCHING FLATS on them???
The wrenching flats (flat sides), make it much easier to use a vast array of wrenches to get the flash hider off the bbl. In fact, IF I had wrenching flats on my stock Colt crush washers, I’d be able to use my armorers wrench (which I prefer), to get the flash hider off the bbl.
As it stands, I cannot use my armorers wrench on the flash hider, because the round crush washer won’t permit the THICK armorers wrench to go onto the flash hider to take it off.
I either need crush washers with wrenching flats, OR I will need to mill down the thickness of my armorers wrench, and I really don’t prefer to start milling on my armorers wrench. I’d rather have the flat sided crush washers, as I am fairly certain I’ve seen them before…
???

Thanks so much.

2

I haven’t heard of such a creature.

A 3/4" open ended wrench from Craftsman works for me.

3

The USGI type wrench works for flash hiders. I use a USGI wrench or a Craftsman Tappet wrench. I also use these rubber coated vise jaws which don’t mar or leave aluminum on barrels.

http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=12799&title=SCG+AR-15%2FM16+ACCU-GRIP+BARREL+VISE+JAWS

I even have a set cut in half for uppers where the barrel is barely sticking out beyond the rail/tube or FSB like on a mid-length.