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Chokes may be formed at the time of manufacture either as part of the barrel, by squeezing the end of the bore down over a mandrel, or by threading the barrel and screwing in an interchangeable choke tube. Chokes may also be formed even after a barrel is manufactured by increasing the diameter of the bore inside a barrel, creating what is ...
Many choke types original and aftermarket exist for the SPAS-12. [2] A 44 mm grenade launcher was used by France for explosive grenades capable of a range of 150 meters. [3] A factory shot diverter that spreads shot vertically or horizontally was originally included with earlier model SPAS-12s. There are many known reproduction diverters. [4]
Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve their air flow. Cylinder heads, as manufactured, are usually suboptimal for racing applications due to being designed for maximum durability.
An autoloader or auto-loader is a mechanical aid or replacement for the personnel that load ammunition into crew-served weapons without being an integrated part of the gun itself. The term is generally only applied to larger weapons, such as naval weapons , tanks , and artillery ; that would otherwise have a dedicated person or persons loading ...
An 1858 New Model Army black-powder cap-and-ball revolver replica. The cylinder has been removed from the frame. The modern revolver circular speedloader holds a full cylinder complement of cartridges in a secure fashion, spaced in a circular configuration so as to allow the cartridges to drop simultaneously into the cylinder easily (although non-circular types such as half moon clips are very ...
This choke features muzzle spikes and gas ports for breaching. Also considered a choked cylinder it can be used for firing slugs as well as buck shot. [6] 7.5" Barrel Extension: machined from 4140 ordnance grade steel with a matte black oxide finish. This attachment is threaded to screw into the UTS-15 barrel (like the Tactical Choke Tube). [7]
When used as a loader the single boom (rather than twin arms) is very highly loaded and even with careful design is a weakness. A vehicle with a 5,000 lb (2,300 kg) capacity with the boom retracted may be able to safely lift as little as 400 lb (180 kg) with it fully extended at a low boom angle.
The manual choke pull handle in a 1989 Hyundai Excel. The term "choke" is applied to the carburetor's enrichment device even when it works by a totally different method. Commonly, SU carburettors have "chokes" that work by lowering the fuel jet to a narrower part of the needle. Some others work by introducing an additional fuel route to the ...