From the document JohnKSa linked under the section entitled "Background of the Investigation" on page 5 we find the following:
"Other agents on the surveillance who were not involved in the shooting we're armed with M16 rifles and submachine guns."
The fact that they were referred to in plural would suggest to me that, at some point in the investigation there were at least two of each.
Also, Platt's S&W 586, while chambered for .357 Magnum, was found loaded with Winchester Silvertip .38 Special +P ammunition. One of the FBI vehicles examined after the shooting was found to contain two speed loaders, one loaded with .38 +P LSWCHP and the other with .357 Mag Winchester Silvertip, so we know that speed loaders were available as at least one agent had them. McNeil's shotgun not only never made it out of the car, but was found unloaded.
Finally, while the vests available that day might not have stopped all the rounds fired by Platt and Matrix, they'd still have been better than nothing. Even NIJ Level II armor, considered very weak by today's standards, is rated to stop .357 Magnum and the armor the FBI had in 1986 was certainly capable of stopping.38 +P and 12 gauge #6 shot. Even though the .223 FMJ could certainly penetrate it, it's velocity would be reduced in doing so and the resulting wound would be less severe than one sustained by someone unarmored entirely.
"Other agents on the surveillance who were not involved in the shooting we're armed with M16 rifles and submachine guns."
The fact that they were referred to in plural would suggest to me that, at some point in the investigation there were at least two of each.
Also, Platt's S&W 586, while chambered for .357 Magnum, was found loaded with Winchester Silvertip .38 Special +P ammunition. One of the FBI vehicles examined after the shooting was found to contain two speed loaders, one loaded with .38 +P LSWCHP and the other with .357 Mag Winchester Silvertip, so we know that speed loaders were available as at least one agent had them. McNeil's shotgun not only never made it out of the car, but was found unloaded.
Finally, while the vests available that day might not have stopped all the rounds fired by Platt and Matrix, they'd still have been better than nothing. Even NIJ Level II armor, considered very weak by today's standards, is rated to stop .357 Magnum and the armor the FBI had in 1986 was certainly capable of stopping.38 +P and 12 gauge #6 shot. Even though the .223 FMJ could certainly penetrate it, it's velocity would be reduced in doing so and the resulting wound would be less severe than one sustained by someone unarmored entirely.