Recently picked up a Springfield Saint Edge ATC again - right now I'm building a second upper that will have a 14.5" Centurion Dimpled RECCE barrel - shave off almost 1.5lbs off the front. Just because it seems like it would be fun to make it a bit "shorter" - that, and the original Drake Athena had a 16" variant.
https://centurionarms.com/recce-precision-stainless/dimpled-recce-barrel/