ASR Muzzle Brake
ASR Muzzle Brake - Location Overview maps
ASR Muzzle Brake - Details
The ASR Muzzle Brake is in the Liberty Region at the Auroa Hospital.
It's on the top floor in a vending machines / snacking area.
ASR Muzzle Brake - Location Screenshot
DMR Compensator Location Overview maps
DMR Compensator Details
The DMR Compensator is at the outside of the Detention Center at Liberty.
Handy to do it while freeing Daigoroh in the "An Ingenuous Genius" Main Mission.
DMR Compensator Location Screenshot
HDG Compensator - Location Overview maps
HDG Compensator - Details
The HDG Compensator is in the Sinking Country Area at Radar Station North.
It's on top of the tall building next to the one with the big satellite dish.
HDG Compensator - location screenshot
HDG Muzzle Brake
HDG Muzzle Brake - Location Overview maps
HDG Muzzle Brake Details
The HDG Muzzle Brake Attachment is in the New Stirling area at Blue Viper Outpost.
It's in a locked room.
To get inside "Grab" (PS4: Hold Square) one of the enemies and drag him to the door.
It will open and stay open.
HDG Muzzle Brake - Got my key with me...
HDG Muzzle Brake - location screenshot
LMG Compensator Location Overview maps
LMG Compensator Details
The LMG Compensator is at the top of the tower at Fen Bog Testing Zone in the Fen Bog Area.
LMG Compensator Top of Tower
Take the staircase up to the tower. Once there, there is a ladder going to the roof.
LMG Compensator Location Screenshot
SMG Flash Hider
SMG Flash Hider - Location Overview maps
SMG Flash Hider - Details
The SMG Flash Hider is in the Liberty Area at Richard Cobden Residences.
It's inside the house.
SMG Flash Hider - Location Screenshot
SMG Muzzle Brake
SMG Muzzle Brake - Location Overview maps
SMG Muzzle Brake - Details
The SMG Muzzle Brake is at the Good Hope Mountain Area at Camp Weasel.
It's in the room where Silverback is stationed in the Sewers.
Kill him in the Main Mission and you can pick it up.
SMG Muzzle Brake - Location Screenshot
STG Muzzle Brake
STG Muzzle Brake - Location Overview maps
STG Muzzle Brake - Details
The STG Muzzle Brake is at the Restricted Area 01 in the Arrow Testing Zone.
It's on the command Deck of "The Arrow".
You only get here with the "Hear No Evil" Main Mission, where you get the access codes to get on the command deck to kill Flycatcher.
STG Muzzle Brake - Location Screenshot