29 year old male, somewhere between 5'7 and 5' tall, currently weigh 78.5kg/173lbs. Experinced lifter, I lift roughly 3-4 times per week at decently high intensity (I take most sets to failure or close) and train in Krav Maga on the side. Fresh off a recent (not perticularly strict) bulk that lasted about 6 weeks (first time really trying one for that long), so not my leanest look ever, and I'm annoyed that my lower belly sticks out, regardless of cutting, bulking or maintaining. Ab muscles have always been there and getting worked (I regularly do hanging leg raises, v ups and side crunches, can hold a plank for minutes at a time) but never been perticularly 'showy'. Is it normal for the lower belly to stick out like that? I have recently come across 'stomach vacuums' and reintroduced the palloff press which are supposed to help. I also do a lot of back work (glute bridges, hip thrusts, resistance band kickbacks) so the lower back isn't getting neglected. Am I too hard on myself? Do I need to cut more?

I'm also in doubt about my body fat percentage. I keep trying to test myself with calipers (albeit cheap ones from ebay) but every time I test I think "Surely that can't be right?"

  
Pics in order are

1-front view relaxed

2-front view tensed

3-back view

4-back view tensed

5-side view

6-side view tensed

7-front view with a fresh pump from chest day

8-front view with a fresh pump from chest day tensed  
  
9-Giving myself the abdomen test with calipers (3mm)

10-Results of the calipers abdomen test (surely not, right?)

M29, 5.7, 78.5kg