Do you Have a Cocker or a Poppet Valve Marker? Need Help Figuring Out What's What?
Sup beginners and not-so-beginners-that-maybe-dun-goofed-a-bit...
I made a little list for people who are new to cockers to help the differentiate the parts.
The ASA is the Air Source Adapter. It is what you screw your air tank into, in this case, it's under the grip/trigger frame.
The feedneck is what you put the loader/hopper onto.
The back block is the block on the back that holds the bolt in place and pulls the cocking rod back to cock the marker for the next shot.
The bolt is the plastic/metal in the top tube of the cocker that shoots the paintball out of the barrel.
The cocking rod is threaded into the hammer, which is in the middle of the lower tube, behind the IVG and Mainspring/Hammer spring. That is what the back block of the gun pulls back in order to cock the hammer for the next shot. The cocking rod is the rod sticking out from the bottom tube of the body and goes through the back block.
The hammer is a fat metal lug that hits the valve stem through the valve body to let air through the bolt. It is situated above the sear and has a screw coming from the bottom of it. It also is between the valve assembly and the IVG/Mainspring.
The IVG is the Internal Velocity Governer, it's the brass donut in the bottom tube that you adjust to change your velocity/FPS.
The mainspring/hammer spring is what pushes the hammer forward to hit the valve stem when you pull the trigger, releasing the sear.
The sear is in the top of the trigger frame and holds the hammer in place after it is cocked.
The Valve and Valve Stem/Cup Seal (Cup seal is on the end of the valve stem) are at the front of the lower tube, behind the front block. They stop/allow air through the system and out the bolt. High flowing valves are great for efficiency, consistency, and a better performing marker in general.
The HPR or High Pressure regulator (inline reg/vert reg) is what regulates the air pressure from the air tank regulator to something useable, this air is routed through the valve and bolt.
The LPR or Low Pressure Regulator (horizontal reg, usually. in front of gun, under ram and to the right of the 3-way) regulates the pressure to the 3-way and ram.
The Ram is what pneumatically pushes the back block (in your case), or the bolt in general, back and forth.
The 3-way is what the timing rod attaches to and works as the solenoid, letting air through certain hoses to certain parts of the front block, making the gun function. Slick and low volume 3-ways make for a snappy trigger pull, high volume ones make for a smooth but longer pull.
The timing rod is what attaches to the trigger frame and is on the right side (passenger) of the frame and front block. It is what you adjust with small set screws to change the length of your trigger pull when shooting.
QEVs, or quick exhaust valves go on the ram and allow for the unneeded air from the last stroke to exit the ram as quick as possible. QEVs will allow you to make the gun fire quicker, more snappily and conserve air at the same time by allowing you to shorten the timing, thus using less air per shot. Not a lot, but it's DEFINITELY noticeable and a nice upgrade for any low end ram like the ones that come stock on most WGP guns, to be frank.