I get why the Gen 5 RSA won't work on a Gen 3 G19 frame, but why won't a Gen 3 G17 RSA work with a Gen 3 G17 slide and Gen 5 barrel?

With my personal experience, it wasn't long enough.  

What I did do was use a Strike Industries G-SAP adapter (feels in the gap around the front of a Gen 3 slide for use in a Gen4 or Gen 5 frame in conjunction with a Gen3 G19 to Gen4 G26 adapter from 2A3D.  

Added just enough length for the Gen 3 RSA to fit any Gen 4 G19 frame (in this case, Shadow Systems DR920 and MR920).


Looking back, I'm sure if Gaston had any idea what kind of crazy shit we would be doing, he would have designed things from the ground up to be interchangeable.  But from the get-go, the G19 was designed with its own parts in mind so it was all downhill from there

I see. Thanks.

Are the G34 or G17L RSAs longer?  

I'm just wondering if there is a way to do this with OEM parts. It sounds like no.



It makes sense that they would give the G19 a bit more room for the RSA to get it as long as possible in the shorter frame.

I guess they didn't want to redesign the G17 at that time for RSA commonality (like much later they did with the G47 - or is it the G45? I get those confused) and screw up all the armorers out there.

Gen3 G17, G34 and G17L use the same frame and RSA.  Barrel and slide are obviously different.

The Gen5 G19 is supposed to use the same RSA as the G45, G47 and G49.  So of course my GT Distributors doesn't even have a hang tag for one.  

Come on guys, you literally carry the RSA for the G17T, but not four of the newest models (which car covered under one part number)?

Edited because my spell check changed G17T to G17..

Yes ... I type G17 enough that spell check recognizes it

As I recall, the lug on the bottom of barrels that use the 19 lug (which includes all Gen5 9s) sits back farther from the muzzle than the G17/34 Gen 1-4 barrels.