ACTION- The heart of the gun, receiver, bolt or breech block feeding and firearm mechanism - see Box Lock, Rolling...
The NSSF (National Shooting Sports Foundation) has put together some information that can be used to educate media, politicians and others who are truly unaware of the differences in fully automatic weapons and semi-automatics that are...
Length of Pull: The distance from the center of the trigger in the cocked position to the center of the butt plate.
Stock Drop: The angle a stock either is above or below the center line of the bore of a shotgun. Largely a matter of preference and facial shape/structure....
Standard (Stated) Bore Diameters
Beretta Optima .733
Beretta Mobilchoke .723
Beretta Xtrema Optima Plus .733
Browning Invector Plus .741
Mossberg 835 Ulti-Mag .775
Ruger Red Label .745
Winchester Super X2 .741
Browning Invector Plus .630