Judging from my research and all the accounts/personal data of other's, I've pretty much narrowed the Gen3 vs Gen4 barrel debate/mystery down to two points:
1) The Gen3 and Gen4 barrels are different.
2) It doesn't matter.
•20 gen3 (sold)
•23 Gen4 (/19 conversion)
•M&P •Ruger •Smith&Wesson •Kel-Tec •Mossberg •LWRC •Glades Gun Works
Last edited by T-Rod45; 01-11-2013 at 18:52..