Guns Rainbow 6 siege

Every pistol – Muzzle Brake
Every DMR (Twitch, Glaz, Buck, Blackbeard Dokkaebi, Lion) – Muzzle Brake
6P41 (Fuze, Finka) – Flash
416-C Carbine (Jager) – Comp
552 Commando (IQ) – Flash
556XI (Thermite) – Flash
AK-12 (Fuze) – Muzzle Brake
ALDA 5.56 (Maestro) – Muzzle Brake AR33 (Thatcher) – Flash
AUG A2 (IQ) – Comp
BEARING 9 (Hibana) – Comp
C7E (Jackal) – Comp
C8-SFW (Buck) – Flash
F2 (Twitch) – Muzzle Brake
FMG-9 (Smoke) – Flash
G8A1 (IQ) – Comp
G36C (Ash) – Comp
K1A (Vigil) – Comp ( new fav op )
L85A2 (Sledge, Thatcher) – Flash
LMG-E (Zofia) – Muzzle Brake
M12 (Caveira) – Flash
M249 (Capitao) – Comp
M762 (Zofia) – Compensator
MK17 CQB (Blackbeard) – Muzzle Brake
MP5 (Doc, Rook) – Flash
MP5K (Mute) – Comp
MP7 (Bandit) – Comp
MPX (Valkyrie) – Comp
Mx4 Storm (Alibi) – Comp
PARA-308 (Caipitao) – Muzzle Brake
PDW9 (Jackal) – Comp
R4-C (Ash) – Comp or flash
Scorpion Evo 3 A1 (Ela) – Comp
( I actually like her with 3 round burst )
SMG-11 (Smoke) – Flash
SPEAR .308 (Finka) – Muzzle Bra
SPEAR .308 (Finka) – Muzzle Brake
T-5 SMG (Lesion) – Flash
MT95-LSW (Ying) – Compensator
TYPE-89 (Hibana) – Compensator (off topic: somehow Muzzle Brake works 100x better than Flash Hider on this gun, but they are both inferior to the Compensator)
UMP45 (Castle, Pulse) – Compensator (this weapon as almost no vertical recoil, so there is no point in using anything other than Compensator)
V308 (Lion) – Muzzle Brake (same as Twitch, Finka, Capitao)
Vector .45 ACP (Mira) – Compensator
M4 ( Maverick ) - flash hider
ARX ( Nomad ) - Compensator
AK7-4 ( Nomad ) - Flash Hider
AUG23 ( Kaid ) - Muzzle