Front squatting is a great movement to aid in flexibility but, issues with ankle and hamstring flexibility usually makes front squatting hard.  Be sure to use a squat ramp to raise your heels and change the centre of gravity making it easier for you to drop into the squat position.
Elevating the heels to an incline position aids in flexibility and puts more emphasis on quad development while easing pressure on the back and knees.

Formed from one solid piece of steel, our squat ramp, also known as a squat wedge or heel block, is bent to form the perfect angle for front squatting. It's equipped with grip tape to ensure that there is no movement of your feet when you squat.

Stand with your toes elevated to stretch the hamstrings and calves before heavy lifting or use the upper section for calf raises.