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M242 Automatic

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Automatic Weapons

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Full Auto Cal Pistol

BROWNING HI-POWER MACHINE PISTOL CONVERSION

SPECIFICATIONS:

CATEGORY COMMERCIALLY MANUFACTURED

CALIBER 9 MM PARABELLUM

SEMI AND FULL AUTO

OPERATION RECOIL-OPEN BOLT SYSTEM

MAGAZINE CAPACITY 13-AND 25-ROUND

MAGAZINES AVAILABLE BARREL LENGTH 4-3/4- AND 7-INCH AVAILABLE

REMARKS: THE PORTABILITY AND COMPACTNESS OF THIS WEAPON OFFERS A DEFINITE ADVANTAGE AS A POLICE OR MILITARY SPECIAL-PURPOSE WEAPON REQUIRING UNLIMITED FIREPOWER IN A SMALL PACKAGE. SOME MODELS HAVE TANGENT REAR SIGHTS GRADUATED UP TO 500 YARDS AND DETACHABLE SHOULDER STOCKS. THE ADDITION OF A SHOULDER STOCK, LONGER BARREL, AND AN IMPROVISED MUZZLE BRAKE SIMILAR TO THAT EMPLOYED IN MOST CONVENTIONAL SUBMACHINE GUNS (NOTABLY THE THOMPSON SMG) MAKES THE SYSTEM MORE EFFECTIVE AS A SMG. MAGNA-PORTING THE BARREL ALSO REDUCES THE MUZZLE CLIMB DURING A UTOMA TIC FIRING.

MOST MILITARY-ISSUE GUNS WITH TANGENT REAR SIGHTS HAVE A SLOT AT THE BACK OF THE GRIP FOR A SHOULDER STOCK ATTACHMENT AND ARE READILY CONVERTIBLE TO A VERY ACCURATE, LONG-RANGE PISTOL WITH THE STOCK ATTACHED. COMMERCIAL MODELS WITHOUT SLOTS CAN ALSO BE ADAPTED FOR A STOCK BY SIMPL Y PA TTERNING A SLOT ON A SMALL FIXTURE AND BRAZING OR SIL VER -SOLDERING IT ONTO THE GRIP. A SKELETON-

TYPE DETACHABLE STOCK IS MUCH EASIER TO BUILD THAN THE CONVENTIONAL WOODEN SHOULDER STOCK.

SYSTEM OF OPERATION:

Originally, the Hi-Power pistol was issued and designed as a semiautomatic pistol with variant shoulder stock models. To convert the weapon to selective fire functioning without altering the receiver, it is necessary to improvise a separate trigger mechanism. Since the weapon is impossible to control with only one hand when it is on full automatic fire, it is necessary to add a forward grip to help control the upward motion of the muzzle during its operation. The forward grip contains the auxiliary trigger mechanism necessary to operate the weapon on semi or full automatic mode.

In the full automatic mode, it is advantageous to employ the proven open bolt system to prevent the possibility of "cookoff" or ignition of the cartridge by excessive heat buildup. The system allows the barrel to cool between firing intervals, since there is no ammunition in the chamber when the bolt is held in open position by the auxiliary sear. This will allow continuous ventilation during shooting intervals.

The original sear and sear lever must be replaced to operate the new open bolt system. The new sear must have a projecting lug with enough protrusion to be pressed down by the sear lever hook during the last 1/16-inch of travel by the fully closing slide. This will insure that the slide is fully locked to the barrel lugs before the hammer hits the firing pin to activate the cartridge.

The sear lever must have enough clearance to bypass the protruding lug while fully closing, until it touches the lever hook which forces the sear protrusion down, releases the hammer from cocked position, and ignites the cartridge. This clearance also insures that the hammer will not be released before the slide is fully locked, causing malfunction or misfire during operation.

CONSTRUCTION DETAILS OF CONVERSION PARTS:

The auxiliary trigger mechanism and trigger housing can be readily built with or without the aid of machining. The trigger housing is steel sheet about 1/16-inch thick. The internal dimension of the housing must conform with the thickness of the Hi-Power's trigger guard where the rear portion of the auxiliary housing is to be mounted.

The auxiliary trigger and sear must also conform with the housing's internal dimension in order to avoid looseness. Hard-ended hex screws are preferable for mounting the auxiliary trigger housing to the Hi-Power's receiver. The receiver must be threaded for mount screws.

The auxiliary safety-selector mechanism can be positioned either to the left or right and is retained by a snap ring. It contains the index ball and spring, as does the conventional-type selector, for type of fire.

The one-piece grip may be either wood or plastic. The grip contains the crossbolt nut that mates with the grip screw in securing the grip to the auxiliary housing. The crossbolt nut contains the trigger return plunger and spring.

CAUTION: NEVER RETRACT THE SLIDE TO LOAD THE CHAMBER IF THE AUXILIARY TRIGGER MECHANISM THAT HOLDS THE SLIDE OPEN IS NOT INSTALLED. THE WEAPON WILL FIRE ON FULL AUTOMATIC UNTIL THE MAGAZINE IS EMPTY EVEN WITHOUT THE TRIGGER BEING PRESSED. This warning applies only if the original sear and sear lever are replaced with the sear and sear lever for automatic functioning. Then the sear is tripped every time the bolt is closed by the sear lever hook.

Note on operating the triggers (front/auxiliary and rear/ original): The auxiliary trigger mechanism controls all the func tioning in the conversion mode. The original trigger mechanism does not operate after the conversion parts are installed. Pressing the factory-original trigger will not have an effect on the conversion parts since it is completely deactivated once the conversion parts are installed.

The original safety lever and auxiliary safety selector lever can be activated at the same time the slide is retracted on the hold-open position. This insures a double safety system. However, to put the weapon in firing position, both safeties must be disengaged.

BROWNING HI POWER

MACHINEPISTOLE

Browning Silencer

PARTS LIST.

1. Selector lever pin

2. Auxilary sear stop pin

3. Auxilary trigger housing frame—formed sheet metal

4. Auxilary sear

5. Trip

6. Trip pin

7. Auxilary trigger pin

8. Trip spring plunger

9. Trip spring

10. Auxilary trigger

11. Trigger spring plunger

12. Trigger spring

13. Trigger spring and plunger assemb ly ho using tube

14. One-piece wood front grip

15. Auxilary sear spring mount

16. A uxilary sear spring

17. A uxilary trigger housing connecting plate screw

18. Auxilary trigger housing assembly screws—two-piece hex type

19. Auxilary sear pin

21. Grip stock I plunger assembly housing tube retaining screw

22. Selector index stop notch shoulder-pressed-fitted milled metal rod

23. Connecting plate pin

24. Auxilary trigger housing plate insert

25. Replacement or modified original tripping shoulder— original sear lever

26. Replacement sear

27. Selector lever

28. C-clip—purchased

29. Selector index steel ball

31. Selector index ball spring

32. Selector lever/pin rivet

33. Auxilary trigger housing connecting plate

Fix Citori Selector Welrod Silenced Pistol

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Browning Full Auto Conversion

BROWNING Hl POWER

Selective fire conversion

Browning Power AutomaticImprovised Weapons DesignsBlack Powder Pistol Concept

.45 BULPUP SILENCED PISTOL

SPECIFICATIONS:

CATEGORY IMPROVISED-HANDMADE

TYPE OF FIRE SINGLE ACTION

OPERATION BLOWBACK ACTION

REMARKS. THIS PISTOL DESIGN CONCEPT FULFILLS DUAL REQUIREMENTS THAT THE FAMOUS SLEEVE GUN DOES NOT INCORPORATE. THE WEAPON CAN BE FIRED WHILE CONCEALED UNDER THE OPERATOR'S COAT AND IS ALMOST UNDETECTABLE IN POOR LIGHT. SINCE A FIXED SIGHT IS INCORPORATED, IT ALSO OFFERS THE ADVANTAGE OF BEING ABLE TO BE ACCURATELY AIMED LIKE THE STANDARD WELROD PISTOLS. THE WEAPON SHOWN IS THE .45 CALIBER ACP VERSION ALTHOUGH A MUCH SMALLER VERSION FOR .32 CALIBER AND 25 ACP CHAMBERING IS MUCH MORE CONCEALABLE. THE 45 ROUND, HOWEVER, GIVES BETTER STOPPING POWER THAN THE FIRST TWO CALIBERS MENTIONED.

CONSTRUCTION DETAIL:

The weapon can be constructed using primarily seamless tubing for its silencer casing. Its silencer system is simple, yet effective. The .45 Bulpup silenced pistol incorporates a single action hammer powered by a coil spring which can be manually cocked and lowered as in conventional single action revolvers or pistols. This feature offers more safety than a striker-operated system, since the striker cannot be lowered unless it is fired without a round in the chamber.

The pistol grip is simply formed from a 5/16-inch-diameter rod of milled steel, or 1/2-inch-thick plate, although 1/4-inch may be used. If the rod material is used, the trigger bar must be mounted offset, A small tube is brazed or soldered below the silencer casing to house the trigger bar. The skeletonized grip frame is also brazed or spot-welded to the silencer tubing.

The trigger housing is constructed from 1/16-inch-thick sheet metal using 3/8-inch-thick plate as a spacer on the rear part. This spacer is riveted or permanently brazed between the two sheet metal forms serving as the trigger housing frame.

The breechblock is a solid metal rod the same diameter as the inside diameter of the silencer tubing. The breechblock has a front face counterbore to accommodate the rim of the cartridge used. The metal block is spot-welded or permanently brazed to the front of the trigger housing frame. A spring-loaded extractor and ejector is assembled to the breechblock while the free-floating firing pin is secured in place by the breechblock connecting pin. The barrel can be either pinned or permanently brazed to the silencer tubing.

The barrel is ported and an expansion chamber surrounds it. The front portion of the barrel has a bleed hole on it to vent gasses to the front baffle channels while the pressure peak is still in the barrel. In the front of the barrel is the baffle channel where sets of metal spacers and a rubber disk are assembled. An extended false muzzle, which acts as an end cap, is screwed to the front end of the silencer casing.

To load the weapon, turn the trigger housing 35 degrees upward until the breechblock connecting pin clears the slot. Then pull it out from the silencer tubing. Load the barrel chamber then snap back the breechblock inside the silencer tubing until the connecting pin is parallel to its seat. Turn the trigger housing down 34 degrees so the connecting pin will seat on its locking slot to the silencer casing.

To fire the weapon, simply cock the hammer until it snaps with the sear. The sear and hammer are powered by a single spring. The hammer can be cocked and uncocked under the sleeve or inside a coat. The weapon is ideal for special operations and can be fired either concealed or as an accurate, short-range, silenced pistol.

Cocked Hammer Revolver Homemade Gun

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Baffle Suppressor Acp
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Responses

  • aleandro
    How to work browning hi power full auto?
    4 years ago

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