Manual

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design itself has long since shown its age. The magazine, however, is still very good and
the ubiquitousness of this type of magazine ensures that they will be available for a very
long time at very low prices. These magazines have been made in a dozen countries or
more over the last half century and as a consequence they vary widely in their dimensions
and specifications. The most common of the FAL style magazine is the “Metric Pattern” that
is also used in the RFB and the “Inch Patten” FAL Magazines of British, Canadian,
Australian origin will not work without modification to the front tab.
The problem with a design that was so common for so many decades is that
some magazines have been very well made but have seen hard use and abuse in training,
in wars, and in conflicts all over the world in 50+ years. Others have been very poorly made
but used very little or kept in storage for decades. This means there are no guarantees with
these magazines based on appearance and one that works fine in one rifle may not work in
another. All magazines must be tested before service use. Most malfunctions can be
attributed to faulty, damaged, or dirty magazines. However these magazines are easily
repaired by anyone possessing a small amount of mechanical skill and knowledge. If you
have experienced any functioning problems with your RFB, make a note as to which
magazine the problem occurred and repair or replace that magazine as soon as possible.
Kel-Tec CNC, Inc. does not warranty repairs due to malfunctions caused by aftermarket
magazines.
To Adjust the Gas System
The gas system may require adjustment for a variety of reasons, such as different
ammunition loadings, change in environmental conditions, fouling and carbon build-up from
improper or infrequent cleaning, or moving to a less stable shooting position. To find the
optimum gas system setting, ensure that the gas restrictor cap is cool enough to touch, and
then turn it Clockwise until it is completely bottomed out and closed. Note: The bottom or
closed position will not always align a slot on the regulator with the Adjustment pin.
Figures 25 & 26: The Gas Restrictor cap at Bottom +0 (Left) and Bottom +1 (Right)
The first slot that it aligns with is called Bottom +1. When you have found the bottom most
position, turn the regulator 1 and 1/4 turns (10 positions, Bottom +10) Counter-Clockwise to
open it up. This is normally not enough gas to allow the rifle to function in most
environments. While on the firing line at a range, load one round into the magazine and fire
the rifle as you would normally making sure all safety rules are followed. When the rifle
fires, the bolt stop should be automatically activated by emptied magazine’s follower.
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Figure 27: Bolt stop in open position
If it is not, ensure the rifle is unloaded and turn the gas restrictor cap clockwise one position
to Bottom +9 and repeat the test until the bolt stop activates from your chosen shooting
position with you selected ammunition. Close the gas restrictor cap 1 or 2 more clicks. This
will ensure reliable function with the minimum amount of recoil necessary to operate the
action. If the gas restrictor cap becomes too hot or too fouled to adjust by hand, seat the
rim of a 7.62 NATO cartridge in the slots on top of the gas restrictor cap to adjust it.
Figure 28: Using the rime of a cartridge to turn the gas restrictor cap
Adjusting the Gas System for Suppressor Use
When using a suppressor on your RFB, it will be necessary to adjust your gas system in
order to function with the increased backpressure created by the suppressor. Before use,
turn the gas restrictor cap (RFB-161) counter clockwise until comes off of the gas head,
then screw the cap back on one and a half turns to insure that it does not come off during
shooting.