Splinter Cell: Conviction is a forthcoming video game. Unlike its predecessors, NPC weapons will be wieldable.
The following guns appear in the forthcoming video game:
Sam's main weapon and sidearm like the previous games will be the FN FiveseveN, this time with a flat dark earth (tan) frame and a compensator, as well as now appearing to be the USG model. Referrred as the 'FMP8 Pirol'.
Heckler & Koch Mark 23
The Heckler & Koch Mark 23 is seen in the hands of various enemies in the gameplay trailers. Referred to as the 'MK.23'.
SIG-Sauer P228
The SIG-Sauer P228 is used the Russian guards in the co-op trailer.
from Multi-Player Experience Part II: Deniable Ops video, it's seem to be P228R or P229R because it filted with tactical flashlight - Firearmsmania
MP-446 Viking
Seen in the weapons cache in the Lumber Mill video.
Walther P99
Seen in the Story trailer.
Desert Eagle
Seen in a recent trailer in the hands of Fisher.
Ingram MAC-11
The Ingram MAC-11 is seen in the hands of enemies in the gameplay trailers.
The Heckler & Koch MP5A5 is see in most gameplays with a telescoping stock and with Surefire 628 dedicated forend weaponlight .
SA Vz.61 Skorpion
The SA Vz.61 Skorpion is seen holstered on the back of the Russian agent in the co-op trailer. It is referred as the 'Skorpion'.
SR-2M Veresk
Will be included in the Limited Collector's Edition as the 'SMG-2' with the foregrip removed. However in the Co-op Montage it seen referred by its original name.