Sons of Anarchy

M4A1 Carbine

The plot of the first episode revolves around a cache of M4s stolen from the Sons by the Mayans (a rival biker gang). Clay (Ron Perlman) uses one at the end of the episode after taking it back from the Mayans.

Glock 17

This is also involved in the plot of the first episode, as the Mayans also stole Glocks from their warehouse (Note: Both the M4s and the Glocks were destined for the "Niners", a gang that also makes appearances in "The Shield"). Several of the bikers, including Jax (Charlie Hunnam) also use them at the end of the episode when they steal the guns back from the Mayans. (When Jax's Glock is seen lying unloaded on his coffee table, it clearly says 9x19mm on the slide if you watch the episode on a big-screen HDTV, so it's definitely a Glock 17.)

Heckler & Koch USP Expert

Clay (Ron Perlman) carries a Heckler & Koch USP Expert (recognizable by its slightly longer barrel and slide) during the confrontation at the end of the first episode. It is possible that this gun will re-appear in future episodes.

Unknown short-barrel revolver

This revolver (with some NICE grips) is given by Ron Perlman as a gift to a rival biker gang.