After losing an incredible amount of weight for his AIDS patient role in "Dallas Buyers Club," Matthew McConaughey bulked up nicely for his newest project, "True Detectives."

On Wednesday (March 13), the "Lincoln Lawyer" star showed off his guns on the New Orleans set wearing a white tank top and dark pants.

The television drama follows two detectives, Rust Cohle and Martin Hart, whose lives become entangled during a 17-year hunt for a serial killer in Louisiana.

Currently without a release date, the one-hour series also stars Woody Harrelson as Martin, Mr. McConaughey's partner, and Michelle Monaghan as Martin's wife.