Storm Lake Glock G27 40-9mm barrels $130.95

[Barth]

Do they make .357 Sig conversion barrels for the G27?

Absolutely and in several flavors.

I personally have a G27 357 Sig 4.16" extended ported black isonite QPQ finish on stanless barrel myself.

If you can find a Storm Lake via a third party destributor you can usually get one faster and cheaper.

My wamma jamma took 3 months to make and finish.
Cost me $208 including shipping.
I think it was well worth it.

If you just want to shoot 357 Sig from your G27, and shop around,
it should cost you about $145.

I like Midway, Brownells, TopGunSupply to name a few.

Be advised that a G33 357 barrel will work fine in your G27.
Also the larger 4.02" G32/357 and G23/40 barrels will fit fine too.
You just get an extended barrel with no additional cost.

Storm Lake makes threaded, ported, Isonite QPQ finish....
Check their website for details.

If you have any further questions don't hesitate to ask.

My nickname isn't Barth Six Barrels for nothing - LOL!