If your 1099B shows that basis WAS reported to the IRS for your transactions (i.e Box A or Box D), then you can just mail the summary page showing the total information.  In these cases, the IRS already has your 1099B information, so you are just following up with the summary totals and there is no need to resend them the same information.  

It is only if your basis was NOT reported to the IRS that you would need to send the entire packet.  If you are unsure, then you should err on the side of caution and side the whole packet, but it seems that you have indicated these are all Box A transactions, so you are fine with the summary page.

If all your transactions were Sales Category A or D with no adjustments, then no mailing of anything  is necessary.
Turbotax will tell you that.

In the other categories, the number of transactions usually would be small and you can put them in "I'll type them in myself". Then, again, no mailing is necessary.

When your summary has code M ( transaction detail to be mailed), a summary is *not* sufficient.
You must provide the detail on your own forms 8949 or otherwise in a manner similar to and with all the information on Form 8949.