3 U.S. soldiers charged with supplying ‘dozens’ of guns to Chicago
The three have purchased 91 firearms from Federal Licensed Firearms dealers in Tennessee and Kentucky since September 2019 — most within the past five months,

https://chicago.suntimes.com/2021/5/11/22431375/3-u-s-soldiers-charged-allegedly-supplying-dozens-guns-chicago

https://www.breitbart.com/2nd-amendment/2021/05/12/3-us-soldiers-charged-supplying-guns-used-chicago-murders/

Crime does pay, until you get caught, FBI must be too busy looking into Jan. 6th protest!

One of Biden's gun control proposals is to limit the number of firearms a person can buy per month to one.

The stated rationale is to reduce stockpiling of weapons, not to prevent the flow of straw purchases between states.

Since when is stockpiling (or collecting) guns linked to crimes?  Multiple individuals working together can stockpile a pretty large collection of guns over years, especially if the purchases are on the secondary market, and the state has no Permit to Acquire or registration laws.

1 per month x 12 months = 12 guns/year
12/yr x 10 people = 120/yr
That's more than the 91 guns reported in the story.

Those would just be the guns purchased new from FFLs.