A former US Army Ranger from Florida has strapped a GoPro camera to his belt to catch his estranged wife forcibly grabbing his genitals during a contentious custody handover.

'This is just one of many instances where I've had to use the camera to either prove her guilt or prove my innocence and that's the only reason I am carrying it,' the solider, identified only as 'Michael,' told the station 10News.

Michael, a resident of Pinellas County, has been locked in a drawn-out custody battle with his spouse, 37-year-old Corinne Novak, over their 2-year-old twin boys. The couple are also in the process of getting a divorce.

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Caught red-handed: A former US Army Ranger from Florida had his GoPro camera rolling last Thursday when his estranged wife reached out and grabbed his privates during a custody swap

Money shot: This frame from a GoPro camera strapped to the man's belt appears to show Corinne Novak's hand in the act of grabbing her husband's testicles

Ever ready: The soldier, identified only as Michael, took to wearing the GoPro on his body during his encounters with his wife in order to prove that she is abusive

Behind bars: Corinne Novak, 37, was arrested after her husband shared his GoPro video with the Pinellas County Sheriff's Office

The husband has accused Novak of domestic violence, and in order to prove his claim he took to tying a small camera to his belt using a parachute cord during his encounters with her.

Michael's GoPro was rolling when he met his wife last Thursday to exchange custody of their sons.

The video, obtained by 10News, opens with the retired solider reaching into the back of his car to unbuckle one of his sons. Suddenly, he lets out a scream and jerks his body back.

Upon closer inspection, the blurry footage shows what appears to be Corinne Novak's hand in the bottom right corner grabbing her estranged husband's testicles.

Novak is then heard off camera yelling at Michael: 'call the police. I'm gonna tell them that you just assaulted me.'

When Michael shared the video documenting his alleged assault with the Pinellas County Sheriff's Office, it was enough to have Corinne Novak arrested on a domestic battery charge.

Family feud: The husband and wife have been fighting for the custody of their 2-year-old twins boys (pictured bottom right)

‘We have court coming up so hopefully it goes to show a little bit of validity to what I've been doing and what I've been saying and disapproving what she's been saying,’ the retired Ranger told the station.