The SIG-Sauer P226 Navy continues to be used by US Navy personnel in Season 2. LT Danny Green (Travis Van Winkle) uses his sidearm notably in "Unreal City" (S2E01).
SIG-Sauer P226
Sean Ramsey (Brian F. O'Byrne) gives a SIG-Sauer P226 to Tom Chandler after he is accepted to be a bodyguard of the new President in "Alone and Unafraid" (S02E07). Chandler uses it during a confrontation in a hotel kitchen and then while making an escape.
SIG-Sauer P226 (Reverse Two-Tone)
In "Valkyrie" (S2E11), one of the New Orleans survivors pulls a reverse two-toned SIG-Sauer P226.
Beretta 92FS
The Beretta 92FS (likely standing in for the military-issue M9) is seen throughout the series and is the sidearm carried by CDR Tom Chandler (Eric Dane) and by Tex. In "Valkyrie" (S2E11), several of the Nathan James crew are armed with Berettas, including LT Alisha Granderson (Christina Elmore), LT Andy Chung (Andy T. Tran) and SCPO Lynn (Chris Marrs).
The Glock 17 is again seen carried by Lt. Pete Norris (Derk Cheetwood) and other former officers of the Maryland State Police in Season 2's premiere "Unreal City" (S02E01) and in "Fight the Ship" (S02E02). At least a few mercenaries use them as their sidearm in "Solace" (S02E04) with one taken by SCPO Wolf Taylor briefly. Ex-Royal Navy officer Ned Ramsey (Nick Court) uses one as his main sidearm, first seen in "Achilles" (S02E05). Lt. Ravit Bibas uses one taken from a dead mercenary near the end of "Alone and Unafraid" (S02E07).
CornerShot (Glock 17)
In "Solace" (S2E04), one of the mercenaries is armed with a CornerShot equipped with what appears to be a full-auto Glock 17 during a confrontation with the Nathan James crew.
M1911A1
McGregor (Nathan Sutton) pulls an M1911A1 when confronting CMDR Chandler in "Unreal City" (S02E01). A customized M1911A1 fitted with a weaponlight appears to be the sidearm carried by SCPO Taylor at the start of "Solace" (S02E04). Some of the armed militiamen/mercenaries use them as their sidearms in "Alone and Unafraid" (S02E07).
Revolvers
Smith & Wesson Model 15
One of the immune militiamen pulls his Smith & Wesson Model 15 in "Alone and Unafraid" (S2E07).
Smith & Wesson Model 19
What appears to be a Smith & Wesson Model 19 is used by an Immune refugee briefly in "Uneasy Lies the Head" (S2E09).
In Season 2's premiere "Unreal City" (S2E01), guards at one of the body burning facilities can be seen armed with the Heckler & Koch MP5K. A few mercenaries on the Solace use MP5Ks as their primary weapon in "Solace" (S02E04) and in "Achilles" (S02E05). A mercenary from the Achilles engages Chandler armed with the same weapon near the end of "Alone and Unafraid" (S02E07).
Heckler & Koch MP5A3
In Season 2's premiere "Unreal City" (S2E01), several former officers of the Maryland State Police are seen armed with the Heckler & Koch MP5A3 while aboard the Nathan James. Some of the Achilles-based mercenaries use MP5A3s as their main weapon near the end of "Alone and Unafraid" (S02E07).
Heckler & Koch MP5A2
In Season 2's premiere "Unreal City" (S2E01), several other former officers of the MSP are seen armed with the Heckler & Koch MP5A2 while aboard the Nathan James. In "Fight the Ship" (S2E02), Tex is seen with the MP5A2 while disguised as a trooper.
Heckler & Koch MP7A1
A Heckler & Koch MP7A1 is the weapon carried by Lt. Ravit Bivas (Inbar Lavi) of the IDF in "Solace" (S2E04) as her primary weapon (the MP7 is never issued to IDF members as they prefer the Tavor). The weapon is also present in the same episode next to the corpse of a mercenary.
Brügger & Thomet MP9
A Brügger & Thomet MP9 is used by an armed mercenary named Juan Carlos de Marquez Y Santamaria (Carlos Leal) near the end of "Solace" (S02E04). One of the mercenaries from the Achilles is armed with it protecting "President" Jeff Michener in "Alone and Unafraid" (S02E07).
Rifles & Carbines
M4A1
The M4A1 carbine continues to be the primary weapon carried by the sailors aboard the USS Nathan James. The carbine is seen in the hands of CDR Tom Chandler (Eric Dane), Tex (John Pyper-Ferguson) and Lt. Carlton Burk (Jocko Sims), as well as American military personnel. Burk and other crewmembers are armed with suppressed M4A1's in "A More Perfect Union" (S2E13).
Colt M16A2
The M16A2 is carried by several resistance fighters in "Fight the Ship" (S2E02) including Thorwald (Titus Welliver). In "A More Perfect Union", some of the fake Navy sailors ar armed with M16A2s.
Colt M16A1
McGregor is armed with an M16A1 in "Fight the Ship" (S02E02). At least one is seen with a bounty hunter near the end of "Uneasy Lies the Head". A hostile civilian is seen with an M16A1 in the middle of "Valkyrie". Some of the fake US Navy seamen use them near the end of "A More Perfect Union" (S2E13).
Heckler & Koch HK416
LT Danny Green (Travis Van Winkle) continues to carry an Heckler & Koch HK416 fitted with a Spike's Tactical Havoc Launcher in "Unreal City" (S2E01) and "Fight the Ship" (S2E02). Beginning in "Solace" (S2E04), he carries an HK416 with a 14.5 inch barrel and foregrip. SCPO Taylor briefly uses it near the end of "Long Day's Journey" (S2E06) when Danny infiltrates an Immune cult-controlled safe zone and then he uses it to provide cover during the escape in "Alone and Unafraid" (S2E07). A HK416 is possibly seen with a bounty hunter in "Uneasy Lies the Head" (S2E09).
Heckler & Koch G36C
A Heckler & Koch G36C is seen with some of the Achilles-based mercenaries near the end of "Solace" (S02E04) as one of their main weapons in the season.
AKMSU
An AKMSU rifle is seen in the hands of one of Thorwald's fighters in "Unreal City" (S02E01). An AKMSU with and without RIS handguards are used by a few mercenaries, first seen in "Solace" (S02E04) as one of their main weapons.
AK rifle
An AK rifle is seen with two dead mercenaries in "Solace" (S02E04).
AKM
One of Thorwald's resistance fighters appears to be armed with an AKM in "Fight the Ship" (S2E02).
AKMS
AKMS rifles are seen with some of the mercenaries near the end of "Cry Havoc" (S2E12).
IMI Tavor CTAR-21
An IMI Tavor CTAR-21 is briefly seen when LT Burk speaks to Lt. Ravit Bivas (Inbar Lavi) about swapping the rifle out for the MP7A1 in "Solace" (S2E04).
Ruger 10/22 Carbine
A young Baltimore resident is armed with a Ruger 10/22 when he confronts Tex in "Unreal City" (S2E01). One of the young immune refugees is armed with the rifle in "Uneasy Lies the Head" (S2E09). Another one is seen in "Cry Havoc" (S2E12).
Ruger Mini-14
Some of Thorwald's fighters are seen armed with a Ruger Mini-14 in "Unreal City" (S2E01) and in "Fight the Ship" (S2E02). The Mini-14 is possibly seen with a bounty hunter fighting Chandler's team near the end of "Uneasy Lies the Head".
M1 Garand
One of Thorwald's fighter is seen armed with an M1 Garand in "Fight the Ship" (S2E02). A militia fighter guards an entrance point to a refugee zone in the Everglades Mall and in an abandoned marina hotel complex in "Long Day's Journey" (S2E06).
SKS Rifle
One of Thorwald's fighters in the tunnel is seen with a SKS Rifle in "Unreal City" (S2E01).
Steyr AUG A3
SCPO Wolf Taylor (Bren Foster) of the Royal Australian Navy carries what appears to be a Steyr AUG A3 as his weapon of choice, beginning in "Solace" (S2E04).
Winchester 1873 "Trapper" Model
What appears to be Winchester 1873 "Trapper" Models are seen with militia fighters protecting a refugee safezone in the middle of "Long Day's Journey" (S2E06). One is seen with an Immune refugees after they ambush LT Sims in "Uneasy Lies the Head". A hostile civilian has one with a riflescope in "Valkyrie".
Colt Model 933
SCPO Taylor is seen using a Colt Model 933 as his main weapon, first seen in "Uneasy Lies the Head" (S2E09).
Shotguns
Benelli M1 Super 90
A Benelli M1 Super 90 shotgun with a pistol grip is used by a mercenary in "Cry Havoc" (S2E12).
Benelli M4
A Benelli M4 is seen with a resistance fighter when he secures a corridor near the end of "Fight the Ship" (S2E02).
Remington 870
A Remington 870 with wooden furniture is used by a resistance fighter working under Thorwald in "Unreal City". Another with possible synthetic furniture is used by another fighter in the tunnels. Two variants of the shotgun, with and without an extended magazine tube is seen with militia fighters guarding a refugee zone in the middle of "Long Day's Journey". A few Immune refugees use them briefly when they ambush LT Burke (Jocko Sims) in "Uneasy Lies the Head" (S2E09). A Remington also is seen in "A More Perfect Union" (S2E13).
Sniper Rifles
Springfield Armory M1A
A scoped M1A is used by a sailor on the deck of the Nathan James to provide cover in "Solace" (S02E04).
SVD Dragunov
One of Thorwald's fighters is seen armed with a SVD Dragunov in "Fight the Ship" (S2E02).
Machine Guns
Browning M2 Heavy Barrel
In "Unreal City" (S2E01), the Browning M2HB is seen first mounted on a MSP Humvee. In "Fight the Ship" (S2E02), PO3 O'Connor (Paul James) can be seen firing one of the Nathan James's Browning M2 Heavy Barrel machine guns to take down a helo that opens fire on the crew. M2HBs are seen mounted on American military Humvees throughout "It's Not a Rumor". An improvised technical uses one during a firefight in the middle of "Uneasy Lies the Head".
M249 SAW
In "Fight the Ship" (S2E02), a helicopter gunner is seen using an M249 SAW machine gun on the Nathan James crew.
M249 SAW Paratrooper
In "It's Not a Rumor" (S2E03), a Navy SEAL is seen armed with an M249 SAW paratrooper variant.
M240B
The M240B is seen on the deck of the Nathan James as well as on the Navy RHIBs, first seen in "Solace" (S2E04).
M61 Vulcan
A US Navy F/A-18 Hornet with its M61 Vulcan is seen launching in "It's Not a Rumor" (S2E03).
One of the SEALs has an M203A1 Grenade Launcher mounted to his M4A1 carbine in "It's Not a Rumor" (S2E04).
Rocket Launchers
AT4
One of the armed men on the boats that attack the team on the oil rig is armed with an AT4 in "Valkyrie" (S2E11).
Grenades
Smoke Grenade
A red smoke grenade is used by a mercenary to cover his escape in "Solace" (S02E04).
Thermite Grenade
A thermite grenade is used at the end of "Alone and Unafraid" (S02E07) to get rid of the teddy bears infected with the Red Flu virus.
M84 Stun Grenade
A M84 Stun Grenade is used by LT Green in the middle of "Valkyrie" to cover his escape with Tex and Seaman Miller after being confronted by hostile civilians.
Other
Orion Flare Gun
An Orion Flare Gun is used by Ray (Adam Irigoyen), leader of the Immune refugees, near the end of "Uneasy Lies the Head" (S2E09).
Stryker Strykezone 380
Ray uses a Stryker Strykezone 380 briefly he was disarmed by the sailors in "Uneasy Lies the Head" (S2E09).
Nathan James Weapons
5" Mark 45 Mod 2
The 5" Mark 45 Mod 2 artillery gun is the main defensive weapon of the Nathan James.
Phalanx CIWS
A Phalanx CIWS is seen as one of the defensive weapons of the Navy Destroyer USS Nathan James.