It will take 1or 2 to 6 yrs to get it out to Special Ops communities and Combat arms units.
Combat service support maybe 10 to 12 years if at all.
Overseas units will get and should get priority 1st.
And Conus units on RDF status.
The logistics and training to field a new wpn systems is alot.
ALOT.....
Fugg just building the ammo requirement tables for qual and adddresing range issues is huge.
Building up a x2 war stock in storage let alone units 2 year training forecast is huge...

Lotta reserve and Gaurd units have A2,s

We got M4,s back in 97 in 3/ 187th
Also at same time got m240b,s
Pl, PSG, 4 SL,s had M4,s in a platoon.
Took to around 01 to get all others a M4.
Went to OIF1 we all had em.
Combat service support units still had A2,s
Around 2008 2009 the A2,s were gone.
AD support troops organic to the 101st had m4,s
18th Abn corp support assets still had A2 s
Even the 8inch corp arty guys had A2,s still.

Went to desert storm with a A2 in the 101st.
Everyone in division had A2,s

Left carson in 86 and A1,s
Went to Germany Had A2,s and SAWS.
Carson had M60 tanks
Germany had M1,s in 86 when I got their and was feilding Bradleys in 87 and 88.


5.56mm ammo will be in the system DOD for a long time in AD support units and reserve and gaurd units for their M4,s and A2,s.





Think of it like the M1 Garand and the M1 Carbine in WW2 and The Korean war.

Then along came the M14 7.62 x 51
Then Eugene came along.

Having a new wpn system aint a bad thing.
But it takes a loooooong time to phase in.