so I'm discussing this with a buddy of mine and he says the piston system of the FS2000 will beat the gun up too much when firing blanks with an AR15 blank muzzle adapter. That the orifice in the AR blank firing device needs to be enlarged to keep the gun from breaking parts. I see his point since the FS2000 gas system is way different than an AR15 system. However, I don't want to risk parts damage on a $2K gun just to find out.
What do you think?
If you plan on using GI blanks, then it will work fine, and no damage to the rifle. If you use joe swansons blanks, which are fairly hotter, then you'll probably break something, after prolonged use with those.
The 2 position gas switch will help you if you're using the GI surplus stuff. They are loaded just enough to cycle the M16, so you'll probably have to switch it to "adverse" to let more gas in the system and have it properly cycle.
BTW, I didn't mention how it didn't fit...you could put it on the muzzle brake, but even if you tightened it all the way it wasn't snug...needed to go in another 1.0 - 1.5mm.
Fixed it by removing the roll-pin, and used pliers to tighten it the last little bit. Works great!
Also, had to do a little digging to make sure I had the right blanks. The blanks I have are black on the tip, not violet, which is supposedly the color for M200 blank ammo (according to many, many websites). However, TM 43-0001-27 (Army ammo specs) has no color specified for M200 blanks, just a narrow strip of knurling 1/2" from the cartridge-head, which mine does have.