>>17333444>Assault vest set is too bulky for UU to handleThere are a ton of offensive Pokemon in UU, you don't give them enough credit.
252 Atk Sheer Force Darmanitan Flare Blitz vs. 252 HP / 0 Def Metagross: 428-506 (117.5 - 139%)
252+ Atk Life Orb Bisharp Knock Off (97.5 BP) vs. 252 HP / 0 Def Metagross: 351-416 (96.4 - 114.2%)
252+ Atk Huge Power Diggersby Earthquake vs. 252 HP / 0 Def Metagross: 338-398 (92.8 - 109.3%)
252+ Atk Arcanine Flare Blitz vs. 252 HP / 0 Def Metagross: 306-362 (84 - 99.4%)
252 SpA Chandelure Fire Blast vs. 252 HP / 4 SpD Assault Vest Metagross: 284-336 (78 - 92.3%)
252 Atk Pure Power Mega Medicham High Jump Kick vs. 252 HP / 0 Def Metagross: 282-333 (77.4 - 91.4%)
252+ Atk Mega Heracross Pin Missile (5 hits) vs. 252 HP / 0 Def Metagross: 240-285 (65.9 - 78.2%)
252 SpA Choice Specs Hydreigon Dark Pulse vs. 252 HP / 4 SpD Assault Vest Metagross: 278-330 (76.3 - 90.6%)
Plenty of stuff can 2HKO, and I've probably missed some.