The SIG P220 is a recoil operated modified browning linkless delayed firearm in .45 ACP. The initial recoil moves the slide and barrel assembly rearwards as they are interlocked by means of a single locking lug that locks into the ejection port. As the barrel moves rearward, the protrusion on the bottom rear of the barrel engages a sloped surface on the top of the frame, pulling the rear of the barrel down and unlocking from the slide. After the barrel has unlocked, the slide continues its rearward movement. The P220 is double action and lacks any external safeties, but instead has a decocker. Internal safeties include a firing pin block that is only moved when a lever in the fire control group is raised and contacts the block protruding from the bottom of the breech block, and a disconnect safety. Field stripping is accomplished by holding or locking the slide back and swinging the lever on the left of the frame downwards then pulling the slide assembly off in one piece. The frame of an aluminium alloy with a stamped steel slide. This particular one was made pre-unification in West Germany.
Right Side:
Left Side:
Slide Locked Open - Ejection Port:
Slide Locked Open, Continued
Slide Locked Open, Continued
Slide - Above Profile:
Muzzle:
Single Locking Lug - Engaged:
Single Locking Lug - Disengaged:
Slide Removed - Underside:
Slide Removed - Underside Without Recoil Spring or Barrel:
Breech Face Showing Extractor:
Barrel:
Chamber Face:
Frame - Above:
Frame - Fire Control Group and Hammer:
Breech Block With Firing Pin Safety at Right:
Rear End of Slide:
Recoil Spring:
Magazine:
Riflings:
