A spring then forces the bolt forward, sending a new shell from the magazine into the chamber.

[2] The Model 11-87 incorporates a self-compensating gas system design, which allows the gun to operate with a range of loads, from light 2+3⁄4-inch (7.0 cm) shells to 3-inch (7.6 cm) Magnum shells, without any adjustment by the operator.

[citation needed] A 12 gauge model that accepts 3+1⁄2-inch (8.9 cm) shells is marketed as the Super Magnum.

[1] This model comes with an extra component on the magazine tube called a "barrel seal activator" that helps cycle lighter loads.

[4] The weapon found widespread notoriety when a sound-suppressed version of it was used by the main antagonist in the Coen brothers' film No Country for Old Men, based on the Cormac McCarthy novel.