When the pistol is fired the barrel and slide move backward together for about 3 / 8 of an inch while the barrel is cammed clockwise ( with respect to the shooter ) by a flat, twisting, helical " cut " in the barrel extension.
22.
The standard models have an ambidextrous manual safety / decocker located on the slide; when the safety lever is lowered to the safe position, the firing pin is cammed into the slide away from the hammer, the trigger is disconnected from the sear, and the hammer is decocked.
23.
The rollers can have a cross section in a variety of shapes other than circular, such as : ovals ( which with a single oval roller as the central roller, or one of the outer rollers, results in a cammed motion ), various varieties of superellipses and Reuleaux polygons.
24.
During the " unlocking " sequence, the two cylindrical rollers contained in the bolt head are cammed inward against inclined flanks of the barrel extension and act upon the locking piece and bolt carrier, propelling it rearward at a velocity greater than that of the bolt, which remains closed until the fired bullet has left the barrel and pressures inside the bore have been reduced to a safe level before withdrawing together with the bolt carrier.
25.
With both players facing drug charges ( Irvin's trial for cocaine and marijuana possession begins June 24 ), Dallas owner Jerry Jones acts as if nothing is going on, while the Steelers didn't want their mini-camp to be mini-cammed to death . . . With Jim Miller re-signed last week, speculation grew that Miller or Mike Tomczak will be the answer to Pittsburgh's great question : Who's playing quarterback?
26.
The APX design is a major departure from the M9 . The M9 uses a P38-style locked breech short recoil system, but this has not been carried over to the APX . The APX, instead, uses the system pioneered on the SIG Sauer P220; instead of a tilting locking block, as in the M9, the breech is now locked by the breech block being cammed into engagement with the slide, in the same manner as was first seen on the SIG Sauer P220.
