And how long do you expect the equipment to last?
1 year? 5? 10? Adjust your expenditure accordingly.
Also note that for transport and comms the requirement is for off the shelf, off the line standard commercial items.
50 grand for a pickup
Replaced every 5 years
10,000 a year.
Fire team of 4 per truck.
2500 per person per year.
Service at the local dealer.
And 700 for a pistol.
3000 for a rifle.
10 year life expectancy.
10 to 20 grand for an MG or other platoon weapon and 20 year life.
Happy to take 2 BCAD per year and spend it.
GDP in 2030 is projected north of 2500 BCAD.
5% is 125 BCAD.
2 BCAD is still less than 2% of that budget or 0.8% of GDP.
5 years of 125 BCAD is 625.
10 years is 1250
20 years is 2500
Any way you slice it effectively engaging the citizenry in a volunteer force to support and feed the defence effort is a low cost endeavour.
What are you wanting this force for?
I'm not disagreeing that an engaged citizenry is a bad thing, but the question is where is the focus?
If you are looking for a "Home Guard" then I think you can cut the support weapons off, and put a C20 DMR in your 4 person team.
Get C8A4's in a semi-auto only configuration as well.
If they are an Aid to Civil Power add on, then the question is what specific type of operations do you want then for.
Fires/Floods/IceStorms are a lot different in equipment needs and training than a force designed for Crowd Control, Prison Riot Suppression, Ground based SAR etc.
Identify the short falls first.
Also you keep using the term volunteer - which in an all Volunteer Army is somewhat confusing -- I assume you want unpaid forces who conduct training for the CA?
I believe you are missing significant expenditures on infrastructure to support these forces.
The GoC isn't going to want these folks taking all their equipment (and weapons) home - so there will be a need for some secure centralized storage - as well as training facilties, then the training cadre etc.