Non-Noveske Switchblocks?

[patriot_man]

Are there any switchblocks that aren't Noveske made? I was looking at Noveske's site for a Carbine length switchblock but unfortunately they are out of stock. Are there any other manufacturers that make switchblocks for DI AR-15s in carbine length gas systems?

[slappomatt]

JP rifles makes a series of adjustable gas blocks. best I can tell they would be more use here in CA. the main use of most of the switch blocks is for slowing down the gas system when you use a suppressor. Being as we can't have suppressors here I see no point.

where as an adjustable gas block can be adjusted slightly to help with bolt/buffer slam and make your gun very nice to shoot recoil wise.