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The M16's most distinctive ergonomic feature is the carrying handle and rear sight assembly on top of the receiver. This is a by-product of the original AR-10 design, where the carrying handle contained a rear sight that could be set for specific range settings and also served to protect the charging handle. [ 83 ]
The KAC's lower receiver, holding the magazine and trigger assembly, is essentially a shortened M16 rifle lower receiver, which makes the basic operating controls familiar to many potential users. [citation needed] However, the cartridge, upper receiver, and operating mechanism are all new designs by KAC. [2]
Sear shown in a revolver action. In a firearm, the sear is the part of the trigger mechanism that holds the hammer, striker, or bolt back until the correct amount of pressure has been applied to the trigger, at which point the hammer, striker, or bolt is released to discharge the weapon.
Trigger mechanism in a bolt action rifle: (A) trigger, (B) sear, (C) striker spring, (D) striker. Thompson submachine gun trigger. A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun.
It is a ratchet-like device that interfaces with the multiple serrations found on the side of the bolt carrier. The original AR15 and M16 designs lacked the "bolt forward assist" feature found on the later M16A1. [2] When hit, it pushes the bolt carrier forward, ensuring that the bolt is locked.
The earliest C7s were manufactured by Colt for the Canadian Forces as the Colt Model 715. The C7 series of firearms is driven by the same Stoner bolt and carrier gas system as the M16 series. Like the M16A1 and M16A3, the C7 has both semi-automatic and fully automatic fire modes. The C7 also features the structural strengthening, spent case ...
A binary trigger (or pull and release trigger) is a type of device that allows a semi-automatic firearm to fire at an increased rate. A binary trigger works by firing one shot upon pulling the trigger and then firing a subsequent shot upon release of the trigger. Binary triggers are installed through modification of the fire-control group.
Also featured within the lower receiver is the rifle's trigger assembly. The trigger assembly can be removed from the receiver as a single unit, and features adjustment screws for weight (2 to 4 lbs.) and overtravel, as well as a reversible AR-15/M-16 style thumb safety.