User:K4/CFS Modular Recivers

The Crucible Firearms series/Technology - Modular Reciver Systems (MRa/MRb/MRc Systems, v1.4) (Abbrevaited CFS/T MRS) is the main component of any MRa/MRb/MRc CFS Weapon System. They are the most revolutionary in terms of prosess and operation and are the only non-variable part of the Set 1 systems. They consist of:
 * Modular Reciever A (MRa)
 * Modular Reciever B (MRb)
 * Modular Reciever C (MRc)



MRa
The Modular Reciever A, v1.3, is the more common Reciever in Set 1 and has many different components for it. Some are proprietary and can only be used with this MR.

It utilises a short-stroke, gas-powered piston that is connected to a rod extending backwards to a keyhole in the recivers front face. When fired, the gases from the round's primer ignition travel along the barrel until they enter a small trap in the top of the barrel. There, they are forced against the piston head, pushing it backwards as the gases expell themselves in small holes along the piston's body, never going further into the operation than that. The inertia of the gas, however, pushes it(the piston) back, forcing the rod attached against a striking face in the bolt carrier. The force of the piston strike forces the bolt carrier back, ejecting the empty cartridge. When all intertia has been lost, or the carrier hits the buffer tube, it goes forward again, striping another round out of the magazine and chambering it, and lowering the internal hammer, simultaniously. This prosses continues untill either there are no more round left in the magazine and the bolt carrier locks back, or the piston becomes too fouled for operation.

As with many short-stroke gas pistons, there are three settings for the gas trap/piston.
 * Setting One - "Normal" operation
 * Setting Two - "Worn" Operation; Allows less gas in to foul the piston. Used after extensive firing or if the reciever hasn't been cleaned after 10,000 rounds.
 * Seeting Three - "Suppresed" operation; Allows less gas in to accomidate the increased rate of fire when silencers are in use on the weapon system.