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Near the end of "Lord Baltimore (No. 104)", Raymond Reddington uses a Browning Hi-Power as his main sidearm.
Colt M1903
In a brief continuity error in "Dr. Linus Creel (No. 82)", Duncan Prince's Colt M1911A1 changes for a few seconds to a Colt M1903.
Colt M1911A1
Duncan Prince is seen wielding a Colt M1911A1 near the end of "Dr. Linus Creel (No. 82)".
CZ75 SP01 Phantom
One of Lord Baltimore's men uses a CZ75 SP01 Phantom as his sidearm when he raids the Hyland residence in "Lord Baltimore (No. 104)".
Glock 19
FBI agents, most notably Elizabeth "Liz" Keen (Megan Boone) and Donald Ressler (Diego Klattenhoff) are seen using Glock 19s throughout season 2. Tom Keen (Ryan Eggold) uses one in a dream at the start of "Dr. James Covington (No. 89)". Mossad agent Samar Navabi (Mozhan Marnò) uses the Glock 19 while in the task force under the cover of a FBI agent. A Front cultist named Chris Perez (Blake DeLong), infected with the Apophis Strain, uses Navabi's Glock 19 to shoot her near the end of "The Front (No. 74)".
Smith & Wesson M&P Shield
Raymond Reddington carries a Smith & Wesson M&P Shield in "The Front (No. 74)".
Tokarev TT-33
Yabari is seen showing off his Tokarev TT-33 at the start of "Lord Baltimore (No. 104)".
X26 Taser
Most of Lord Baltimore's men are armed with X26 Tasers when they storm the Hyland residence in "Lord Baltimore (No. 104)".
Walther PPK
A Berlin turncoat named Vargas (Paul Reubens) uses a silenced Walther PPK near the end of "Dr. James Covington (No. 89)" with Reddington using it later to take care of his turncoat associate. A stainless steel version is used by Dr. Linus Creel (David Costabile) near the end of "Dr. Linus Creel (No. 82)".
Unknown
Revolvers
Enfield No. 2
Most of Yabari's men are armed with Enfield No. 2 revolvers throughout the start of "Lord Baltimore (No. 104)".
Smith & Wesson Model 29
Duncan Prince uses a Smith & Wesson Model 29 as his main weapon when he confronts Dr. Creel near the end of "Dr. Linus Creel (No. 82)".
Smith & Wesson Model 686
A Smith & Wesson Model 686 appears to be used by Maddie Thornhill (Meredith Holzman) to shoot people inside a bank at the start of "Dr. Linus Creel (No. 82)".
Submachine Guns
Heckler & Koch MP5K
The bank robbers in "The Monarch Douglas Bank (No. 112)" are all armed with Heckler & Koch MP5Ks.
KRISS Vector
One of Lord Baltimore's men was armed with a KRISS Vector in "Lord Baltimore (No. 104)", seen next to his corpse.
IMI Micro Uzi
Samar Navabi uses an IMI Micro Uzi to cover the advance of Agents Keen and Ressler in "The Monarch Douglas Bank (No. 112)".
Assault Rifles
AKMSU
Most of Reddington's men operating in Warsaw, Poland are armed with AKMSUs modified to carry railed foregrips near the end of "The Monarch Douglas Bank (No. 112)".
Colt Law Enforcement Carbine
Colt Law Enforcement Carbines are seen in the hands of police officers throughout the season.
Norinco Type 56
Norinco Type 56s are used by Yabari's men at the start of "Lord Baltimore (No. 104)".
Battle Rifles
Springfield M1A
A Springfield M1A is seen in the hands of a young Nora Mills in a photo in "Lord Baltimore (No. 104)".
Machine Guns
PKM
A possible PKM is mounted on top of a Cameroonian Humvee pursuing a kidnapped Reddington at the start of "Lord Baltimore (No. 104)".
Sniper Rifles
Desert Tactical Arms Stealth Recon Scout
A Berlin agent has a Desert Tactical Arms Stealth Recon Scout at the front passenger seat of his sedan at the end of "Lord Baltimore (No. 104)". Ezra, the man shadowing Liz, uses the SRS as his main weapon, which was first seen at the end of "Dr. James Covington (No. 89)".
Nemesis Arms Vanquish
Nora Mills aka Lord Baltimore (Krysten Ritter) uses a Nemesis Arms Vanquish with a mounted riflescope and suppressor in "Lord Baltimore (No. 104)" to take out US Marshals guarding the Hyland residence.
Rocket Launchers
RPG-7
Cameroonian child soldier use a RPG-7 in "Lord Baltimore (No. 104)" to take out a pursuing Humvee.
Grenades
Model 7290 Flashbang
A Model 7290 Flashbang is used by a Mossad kidon unit that apprehends Reddington in the middle of "Lord Baltimore" (No. 104).
Others
Warsaw Small Arms arsenal
A hidden small arms arsenal at the kitchen of a doughnut shop in Warsaw is seen in "The Monarch Douglas Bank (No. 112)".
Black Market arsenal
Vargas is seen checking out a variety of small arms in "Dr. James Covington (No. 89)".