PWS Piston Conversion

[ICE1811]

I am thinking about purchasing a 16" middy stripped barrel that was once a PWS piston conversion.

Can this barrel be used as a DI barrel with a standard lo-pro gas block?

What mods are done to the barrel for this conversion? I just don't want to get find myself with a barrel I cannot use....

Thanks

[militarymoron]

it depends on who did the conversion and when. it may have taper pins or set screws. in the case of set screws, the bottom of the barrel is usually dimpled/drilled for the set screws (2). these may or may not be compatible with the gas block you intend on installing.
if i were you, i'd ask the seller to provide some pics and who did the conversion. i'd also ask whether the gas port was opened up.
i have some pics that show both the taper pinned and set screwed PWS conversions here:
http://www.militarymorons.com/weapons/ar.uppers2.html#pws