Michael Collins

Mauser C/96

Used by Liam Neeson as Michael Collins in the Easter Rising scenes in the beginning, as well as an unidentified IRA assassin who shoots a police inspector in his car.

Sharps Carbine

Used by an IRA member during the burning of the police station in the beginning.

Lee-Enfield Rifle

British and Irish forces throughout the film use SMLE Mk.III rifles, and one Irish Volunteers is seen surrendering a Lee-Enfield Mk.I.

Webley Revolver

British officers, RIC Detectives and many IRA members carry Webley Mk.VIs throughout the film. Julia Roberts as Kitty Kiernan pulls a Mk.IV on a potential assassin during the political rally scene.

Lewis Gun

Carried by Black And Tans, most noticeably when it is fired at Dublin tenements.

Hotchkiss Gun

Mounted on British armored cars, most notably in the Bloody Sunday scene.

Steyr 1912

Used by Aidan Quinn as Harry Boland during the Civil War scenes in Dublin, and an unidentified IRA assassin in the Bloody Sunday scene.

Colt 1911

Used by Brendan Gleeson as Liam Tobin, most notably in the Bloody Sunday scene.

Luger P'08

Carried by an unknown IRA assassin who shoots a British secret service agent in his hotel room.

Browning 1900

Used by Tom Murphy as Vinnie Byrne to shoot a British detective through a newspaper, and by Ian Hart as Joe O'Reilly throughout the film.

MP-18

Used by IRA members to assassinate three British secret service agents in a cafe.

Thompson

IRA members are seen using M1921 Thompson submachine guns following Bloody Sunday and during the Civil War fighting in Dublin.

BAR

Seen in the hands of an IRA member during the Civil War fighting in Dublin.

Vickers Gun

Mounted on British and Irish vehicles, most notably when Ian Hart as Joe O'Reilly commandeers one during the ambush at the end of the film.

Mauser Gewehr 98

Used by Jonathan Rhys Meyers as an unknown IRA sniper to kill Michael Collins.