Watch out, Dak Prescott and Cooper Rush ... Troy Aikman showed he's still got magic left in his right arm -- knockin' down 12 beer cans with two, pinpoint 20-yard throws!!
The Dallas Cowboys legend hit a field in Texas to complete the feat -- and while he tells TMZ Sports the footage might not be "100 percent" real ... he did say the accuracy he showcased in the vid is legit!!
"That was my strength, you know?" the 55-year-old said with a laugh.
Troy performed the stunt in hopes of igniting a viral craze -- where people think of creative ways to knock down pyramids of EIGHT Beer cans -- that will benefit a great cause.