At what point in a blowback system is a firearm considered locked?

In most actions that use blowback operation, the breech is not locked mechanically at the time of firing: the inertia of the bolt and recoil spring(s), relative to the weight of the bullet, delay opening of the breech until the bullet has left the barrel.

How does long recoil work?

In a long recoil action, the barrel and bolt remain locked together during recoil, compressing the recoil springs. Following this rearward movement, the bolt locks to the rear and the barrel is forced forward by its spring. The bolt is released and forced closed by its recoil spring, chambering a fresh round.

What does a locking block do?

In this system, the barrel moves back a short distance, locked to the slide or bolt to contain high-pressure powder gases. Upon firing the barrel moves straight back with the slide a short distance. A pin on the locking block strikes the frame, stopping further barrel movement and pulling the lugs from their recesses.

What is breech lock gun?

A breechblock (or breech block) is the part of the firearm action that closes the breech of a breech loading weapon (whether small arms or artillery) before or at the moment of firing.

What is the difference between recoil and blowback?

Not much, usually, the main distinction between blowback and recoil-operated is usually if there’s a form of locking mechanism that stops the breech from opening until the pressure drops enough (recoil operated) or whether the only thing keeping the still hot and pressurized brass from flying back is simply the inertia …

What is a Glock locking block?

MatchPoint USA’s Glock Locking Block is machined to stricter tolerances than a metal injection molded (MIM) OEM part, ensuring a more predictable, and consistent lock-up. The metal injection molding process binds the material with glue, that when heated, melts together with the metal particles.