Long story short, Magic Factory has an After-Sales Service and sells individual sprues. The whole story below.
I recently received the Magic Factory M2A2 ODS-SA Ukraine kit (#2007), which looks great. You can see more on it here:
While going through the kit, I noticed that it looks almost identical to the Meng Bradley kits in parts breakdown, size, placements, etc. I compared some parts and they look the same or very close. In my opinion, they either copied the Meng kit, or used it as a base, etc. So, based on the above, the Magic Factory parts look like they will fit the Meng kit as well.
I also saw an in-box video review (in above link) by Andy’s Hobby HQ that shows all the parts in the Magic Factory 3-in-1 Bradley M2A3 IFV / M2A4 IFV / M-SHORAD ADA Bradley kit (#2004). It shows that all the M2A4-specific parts are on one sprue, B sprue (below), that is not included in the M2A2 ODS-SA kit.
I went to their webpage and they have an After-Sales Service (scroll down the page).
https://www.magicfactory.ltd/#/companyintroduction
email: service@yffun.com
I sent them an email to see if Magic Factory sells individual sprues. I had a very nice return email the next morning and they do. I was able to order the B sprue above for a total of $12 USD shipped. We will see how long it takes to get it.
I plan on using the M2A4 parts on a Meng kit I already have to make an up to date Bradley, with added T-161 tracks.