Excuse me, all, for not having time to search around the net this morning .... I'm hoping someone knows for sure and can tell me... I noticed the other day how extremely well my new G29SF handles hot loads and recoil in general and started wondering if, since the Gen4 G20's are out now, that Glock might also be selling the new RSA's for the G20 yet (as a standalone part). I am referring to the new dual-spring captive RSA's in the Gen 4's. Anyone try to get one of these, by chance? Thanks in advance ... off to work!