Race Gun
Any type of semi-auto that has a high rate of fire, usually powered by a high pressure system.
Ramline
Another type of M-16 pistol grip.
The Ramline pistol grip.
Rat-a-tac
The original stock class quick changer. Although a trade name, it has become synonomous with stock class quick changers. See quick changers for details.
This design hasn't chamnged in over 10 years!
Rate of Fire
This is the measurement of how many paintballs a marker (or player) can fire in one second. This can be measured by a high-end chronograph, or by an instrument used for competition firearms shooting events. The industry standard for the maximum rate is 15 balls a second. In this author's opinion it is still too high for players who do not enjoy being hit 15 times a second. Besides, who is to say that an unscrupulous player would intentionally slow his trigger finger down to fire under the limit.
Rear Cocker
This term refers to markers whose cocking handle protrude out the back of the marker, rather than being mounted on the side or the top of the body. The rear cocker can be a standard length bolt with an extension rod or a longer bolt.
Rebound
This occurs when the hammer strikes the valve a second time (after firing) releasing a small amount of gas. This gas does nothing as the ball has already exited the barrel. This problem is due to the result of the hammer being designed too heavy.
Note the hammer strickes TWICE.
Rec-ball
Recreational Paintball. (qv)
Receiver
A major assembly of a paintmarker. Divided into two main
assemblies, the upper and lower receivers.
Recreational Paintball
This term is applied to the non-competitive area of paintball. It is best described as the area of paintball where having fun should prevail as the dominate cause of player participation. Rec-Ball is played by ninety percent of all paintball players.
Regulator
A device which regulates gas pressure and, ultimately, velocity. The
regulator can be used with any type of gas system (providing it is intended
for the pressures of the specific gas). Once the entire system is adjusted
to work with the regulator, it is then used to adjust velocity.
Remote System
The remote system was originally invented to allow markers, with no
ASA, to be used with C/A. The main reasons why players now choose to
use a remote setup is to allow the CO2 to have more room for expansion
and to lighten the marker. The remote system is basically a long high
pressure hose, connected to the marker (usually into the ASA) and the
other end connected to the C/A tank. The tank is kept in a pouch on the
player's belt. Many harnesses have a large pouch in which the C/A tank can
be placed. When the harness is worn, the tank is situated at the centre of
the back.

(L)Coiled hose remote. (R)Braided steel hose remote.
Removable Barrel
A barrel that can be easily removed from the marker by unscrewing,
turning to disengage a lug or undoing a set screw. The removable barrel
opened a new avenue of entrepreneurship, after market barrels.
Reticle
The crosshairs or dot that can been seen when you look through a telescopic or dot sight.
Return Spring
The spring that returns the bolt to its rested position in some semi-
automatics. Also a spring designed to keep the pump forward in a pump-
action marker to help prevent blow back.
Rifling
Yet another firearms term used incorrectly. Rifling is spiral grooving
cut into the interior surfaces of the barrel, designed to spin a projectile.
However, paintmarker barrel rifling is cut straight, along the longitudinal
axis of the bore. It is simply another solution to blow by.
ROF
Rate of Fire. (qv)
Rupture Disk
See Burst Disk.
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All of the articles in the "virtual book" Durty Dan's Paintball Information Services are free to use for webpages, school projects, reference and to promote paintball to players and the non-playing public. Credit for the source of the information should be included in the bibliography or references page.
© Durty Dan Enterprises 2000. All rights reserved. All works contained herein are under copyright of the author Durty Dan. While the Terms of Use are broad they do not include the right to republish this work in any publication (hardcopy or electronic) for the purposes of personal financial gain.