Originally Posted by cat118
I got an OEM G32 barrel and and OEM G33 barrel for my G27 and never looked back. They both drop right in. I am so pleased I purchased .357SIG mags even though the G27 seemed to work fine.
I do not believe the G31 barrel will work however. I will look to others to confirm or correct me.
Correct, compacts and sub-compacts (G27,G33, G32) are interchangable as are the full size (G31, G22 and extended length G35), but the larger pistols locking lugs are different than those of the compact and sub-compact.
I went with a G32 factory barrel in my G33 just to squeeze a bit more velocity out of an already hyper fast round...but that's just me and my prefrance.
LoneWolf also offers different lengths of barrels for compact/sub-compact that also allow you to shoot lead rounds through your Glocks as well in their extended barrel length section. Check em' out. It all comes down to what you want your pistol to do and perform like. I also added an extended length/compensated barrel for my G35 in 357 Sig that I am very pleased with. I get a lot more speed as well as controllability with fast follow up shots when shooting multiple quick strings in rapid fire.