SIG SAUER P290 - Manual (Page 12)

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2.0 mechanical characteristics and weapon
theory
2.1 weapon description
2.1.1. general
The Sig Sauer P290™ pistol is a modern handgun incorporating the latest
technical advances in weapon design for military, law enforcement and
sporting use. The P290 is a mechanically locked, short recoil operated pistol
with semi-automatic reloading. The P290 uses a double action only (dao)
trigger system. each time the trigger is pulled, the hammer cocks and
releases, causing the pistol to fire. firing takes place with each pull of the
trigger until the magazine is empty. The slide remains open after the last
round has been fired from the magazine.
1.1 Protect your eyes and ears
always wear safety glasses that meet the requirements of american
national Standards institute (anSi) Z87.1 and ear plugs or “earmuff” type
protectors whenever you are shooting. always make certain that persons
close to you are similarly protected. unprotected eyes may be injured by
powder, gas, carbon residue, lubricant, metallic particles, or similar debris
that may emanate occasionally from any firearm in normal use. Without ear
protection, repeated exposure to shooting noise may lead to cumulative,
permanent hearing loss.