Vulcan M-11-9
Encyclopedia
The Vulcan M-11-9 is a semi-automatic, closed bolt
pistol manufactured by Vulcan Armament.
The M-11-9 is a knockoff of the Ingram MAC-10
series which is an open bolt, fully automatic
machine pistol.
While the Ingram uses proprietary magazines, the Vulcan used readily available surplus 32 round sten
magazines.
Utilizing the 9x19mm NATO cartridge, it is a civilian legal version of the military weapon.
The pistol has had a somewhat rocky start with severe quality control issues on early production guns. Early M-11-9's had feeding issues that were eventually traced to poor quality metal used in the feed ramp. There were also issues of failure-to-fire and unintentional full-auto fire (UFAF) that were traced to poor quality firing pins and sear assemblies. The quality issues have since been rectified. Newer sear assemblies are almost impossible to get going full auto, even when "bump firing".
There are several carbine versions of the M-11-9.
Closed bolt
A semi or full-automatic firearm which is said to fire from a closed bolt is one where, when ready to fire, a round is in the chamber and the bolt and working parts are forward...
pistol manufactured by Vulcan Armament.
The M-11-9 is a knockoff of the Ingram MAC-10
MAC-10
The MAC-10 is a highly compact, blowback operated machine pistol developed by Gordon B. Ingram in 1964.-Design:The M-10 was built predominantly from steel stampings...
series which is an open bolt, fully automatic
Automatic firearm
An automatic firearm is a firearm that loads another round mechanically after the first round has been fired.The term can be used to refer to semi-automatic firearms, which fire one shot per single pull of the trigger , or fully automatic firearms, which will continue to load and fire ammunition...
machine pistol.
While the Ingram uses proprietary magazines, the Vulcan used readily available surplus 32 round sten
Sten
The STEN was a family of British 9 mm submachine guns used extensively by British and Commonwealth forces throughout World War II and the Korean War...
magazines.
Utilizing the 9x19mm NATO cartridge, it is a civilian legal version of the military weapon.
The pistol has had a somewhat rocky start with severe quality control issues on early production guns. Early M-11-9's had feeding issues that were eventually traced to poor quality metal used in the feed ramp. There were also issues of failure-to-fire and unintentional full-auto fire (UFAF) that were traced to poor quality firing pins and sear assemblies. The quality issues have since been rectified. Newer sear assemblies are almost impossible to get going full auto, even when "bump firing".
There are several carbine versions of the M-11-9.