World exclusive Bullet To The Head clip: Muscle-off!

Sylvester Stallone may be in his mid-60s, but that doesn't mean he's easing up in the action stakes - as our muscle-tastic world exclusive clip from Bullet To The Head shows.

The old-school action romp stars Stallone as a hitman who teams up with a young detective (Sung Kang) to bring down a nefarious pumped up bad guy (played by Conan The Barbarian himself, Jason Momoa).

Our clip has Stallone and his nemesis squaring off in a man-off of the most ludicrously testosterone-laden proportions.

And then the gloves come off and the axes come out....

Bullet To The Head opens in the UK on 1 February 2013.