Modded a Vltor CASV to fit onto a Piston AR Pistol

[OhThatGuy]

Modified a Vltor CASV to work on a Sig 516 piston AR pistol...

[!Nvasi0n]

Oh man I love that! What did you have to modify to make it work?

[Pax]

I did similar work with a CASV-EL and an Adams Arms bolt-on carbine-length kit a few years back. IIRC, had to sliiightly open up a channel for the Op Rod's large cylinder and remove material just above where the CASV's locking tabs engage the upper half.

It was a damn ugly gun.

[OhThatGuy]

Oh man I love that! What did you have to modify to make it work?

Thanks. Had to remove material to clear the Sigs parts towards the rear and gas block up front. The inside of the top half of the CASV is pretty well mangled but it is rock solid.

[OhThatGuy]

Sig 556R, Sig 556 Patrol with CASV, Sig 516 Pistol with CASV...

[KingsideRook]

Wow, now there's a jolt to my memory. I had an LWRC piston carbine back in 2006 or so, that received a similar mod. I spent a fair bit of time leaning over my gunsmith's shoulder as he relieved the top gas tube channel of my CAS-V to allow the op rod and piston cup to move freely. Ultimately, that gun was sold, but it was a very functional setup when I had it, and so ugly it was almost cute again. Your pistol definitely falls into the same category - nice job, OTG.

[KrampusArms]

Wheres the barrel?