Probably the one closest to what you are sending in. There is a Gen 3 and Gen 3 SF so it could be a tossup. I would sell the frame on GB and order a new SF frame. Glock Store has them for $75 but shipping is $40.

 

If you send in an SF frame they're going to replace it with an SF frame.

 

That’s good news right there, thanks.

 

Do you have an oddball or Gen 3 SF?

 

I have an odd ball that only accepts mags with the center window.

 

If your G21 has the picatinny rail, there are people that may/would want that because it was short lived.

A lot of people live with it, BY using the right Glock mags.

Unless there is a problem with pistol, I'd try to sell it.

Then pick up another G21sf

 

It does have the pic rail, but I’m looking for a shooter, not a collector piece. I have a threaded barrel for it and enjoy shooting it suppressed.

 

No. The frames are too different.

I had 2 of them. I sent one back and it came back as a standard SF frame with the same serial number. The second is unfired, and up until now at least I have hung on to it.

 

I’d never send mine in. It’s pristine, and I have a cache of parts to fix it if need be. But it hasn’t given me any issues.

 

I sent the pistol to the factory and it was returned 9 days later with a new frame, all me internals in the frame and 4 new mags. It should be noted that six of the nine days were consumed with either being in transit, or a weekend. The total out of pocket for all this was$20.00 to my FFL for paperwork and shipping.
Glock perfection!!