glock 20sf conversion question

[Jcastaneda1105]

Picking up a 40 s&w coversion barrel. Do I need to buy 40 s&w mags for my 20sf or will the 10mm mags work?

[dozer wright]

People including myself just shoot 40.cal out of 10mm barrel

[ihasacookie]

Stock 10mm barrel and 10mm mags. No need to change anything.

[Jcastaneda1105]

Really? I thought the barrel needed to be changed.

What about 357 sig or 9x25?

[ihasacookie]

.40 is a shortened 10mm. Think shooting 38 in a 357 mag gun. 357 sig and 9x25 will require different barrels and mags.

[Oceanbob]

Really? I thought the barrel needed to be changed.

What about 357 sig or 9x25?

Glock 10MM mags will run .40, .357 SIG and 9X25.

10MM barrel out of a Glock only, will run .40

To run .357SIG and 9X25 you need barrels for those calibers.

Some people do buy the .40 barrel anyway, and that's fine.

[Oceanbob]

Picking up a 40 s&w coversion barrel. Do I need to buy 40 s&w mags for my 20sf or will the 10mm mags work?

By the way, they don't make .40 mags that will fit inside a Glock 20/21 frame.
They fit in a Glock 22 smaller frame.

[SILENT GUNMAN]

Like everyone else said. Just shoot the .40s out of the stock barrel. Its safe and still plenty accurate. Take that $100-$200 you save and either buy ammo or buy the conversion barrel for the 357 SIG or 9x25 Dillon.