Glock Gen 3 and Gen 4 barrel barrel interchangability [Archive]

Biggy

01-04-13, 01:49

Does anyone know for sure (not probably or should work) if you can use a Gen 3 9mm barrel in a Gen 4 pistol . I believe the only difference in the barrels is the cut out for the different RSA's rear diameter. I heard the answer from Glock is no. I don't believe the Gen 4 RSA would sit level when in place and might lower the pistols reliability. The only factory threaded barrels for the G17 and G19 that I know of are Gen 3 barrels.

Business_Casual

01-04-13, 08:37

Why?

bc

JHC

01-04-13, 10:07

KKM's email told me theirs are interchangeable.

jr1572

01-04-13, 10:12

Does anyone know for sure (not probably or should work) if you can use a Gen 3 9mm barrel in a Gen 4 pistol . I believe the only difference in the barrels is the cut out for the different RSA's rear diameter. I heard the answer from Glock is no. I don't believe the Gen 4 RSA would sit level when in place and might lower the pistols reliability. The only factory threaded barrels for the G17 and G19 that I know of are Gen 3 barrels.

I use a factory threaded 19 barrel in my G4 19. It works fine.

JR1572

mark7

01-04-13, 15:04

The current Glock Armorer's course and manual state that the barrel is one of the "parts that should NOT be casually interchanged with the same parts in the Gen 1, Gen 2 and Gen 3 pistols." It specifically calls out the beveled Gen 4 barrel's bottom lugs.

JG007

02-13-17, 10:59

Bringing back an old thread instead of making a new one, I am hearing very mixed reports of whether or not you can use the Gen 3 threaded barrel in a Gen 4 Glock, what's the latest?

RAM Engineer

02-16-17, 16:01

Glock's current Parts List/Will-Fit/Order Form for certified armorers only lists a single barrel part number for the G17, with no denotation of Gen3 or Gen4 only. Same with the G19, except for a different barrel part number slides produced prior to CHP (I assume that is a s/n prefix?).

I would like to know the answer to this as well.

nml

02-17-17, 10:04

Yes that is a S/N prefix. If you look at the armorers form there are no 9mm threaded barrels available correct?

RAM Engineer

02-17-17, 11:04

Yes that is a S/N prefix. If you look at the armorers form there are no 9mm threaded barrels available correct?

I see none.

jwperry

02-24-17, 20:32

Gen 3 barrels will work in a Gen 4.