Edited sentence: 22 replicas of the Broomhandle Mauser, Thompson Submachine Gun and M1 Carbine.AR-7 Industries made solid steel barrels much heavier than Armalite, Charter or Henry barrels.Armalite barrels had a steel liner in an aluminum shell.Armalite did not make a pistol version.Charter Arms added a pistol version modeled on the Broomhandle Mauser.Charter Arms supplied an accessory bracket that attached by the receiver screw to accept tip-off riflescope mounts on both Explorer rifle and Explorer II pistol.Henry uses a steel liner in a synthetic shell.Herter's used AR-7 receivers and barrels to make.The Armalite stock did not accept the receiver with a magazine in place and the gun was normally sold with one magazine.The Charter Arms Explorer replicated the Armalite Explorer.The Charter riflescope bracket can be used on the Armalite Explorer.The Henry stock does accept the receiver with a magazine in place and the gun is normally sold with two magazines.The receiver is grooved for the tip-off riflescope mount.The receiver was not grooved for the standard Weaver-style tip-off riflescope mount