Here you are, Beretta offer the 92 with wrap around grips from the factory, from their website.....(their spelling of Brigadier not mine)
92 BRIGATIER FS.
The Brigadier was designed to meet the special needs on the INS* who wanted an accurate, reliable and durable .40 caliber pistol with removable front and rear sights. The pistol incorporates all the high performance characteristics of the traditional 92 Series pistols plus features that are unique to the Brigadier.
The Brigadier’s slide is heavier and recontoured. Because of the heavier slide, the gun’s balance is enhanced and felt recoil is reduced, improving accuracy for follow-up shots. The Brigadier is available, on request, with wrap around, stippled rubber grips and hex key grip screws.
and the relevant rule,
17.3 Aftermarket grip panels which match the profile and contours of the OFM standard or optional grip