To Our Valued
This letter is to inform our
valued customers of some extremely important information concerning the
DSA SA58 rifle and receiver line.
Recently, we received an early
production standard model SA58 rifle back for repair. It had been
accidentally blown up due to the use of either faulty or incorrectly
Upon examination of the rifle
it was found that the brass shell casing had incurred sufficient pressure
to cause the case head to start to flow as if in a plastic state. Experts
in the firearm field have indicated that this occurs at between 130,000 to
135,000 pounds per square inch of pressure. In this instance the case head
flowed back into and formed itself around the extractor and split at the
ejector cut out in the bolt face. It then separated from the body of the
shell, which remained solidly in the chamber. The extent of the damage was
the top cover was blown skyward, the magazine and its components were
blown downward, and the receiver was bowed outward at the magazine well
and bent in the cocking handle slot. The barrel, bolt, carrier and
remaining components were not damaged. The owner was not
After studying the physical
damage from the accidental overload situation, the technical staff at DS
Arms decided to test a current production SA58 rifle. The purpose of the
test was to see how much pressure the rifle would tolerate.
The Ware Simulation Group at
Rock Island Arsenal (The real U.S. Government Rock Island) was contracted
to make hi-speed video tapes of one of the current production rifles being
blown up. The Ware Simulation Group at Rock Island Arsenal does weapons
testing of various types.
In the DSA rifle destruction
test, the SA58 rifle was securely mounted in a solid rifle stand in the
test range area. The cartridge used in the test was loaded with a case
full of extremely fast burning pistol type powder, a 220 grain bullet and
a magnum primer. The area was cleared and secured, the cameras started and
the trigger was pulled with a mechanical lever.
Rock Island staff said it was the loudest blast they could recall hearing
in the range area. The cameras recorded the event in great detail,
including slow motion so observers could see the cocking handle and
magazine components exit the gun. The pressure in the explosion was not
measured, but it was generally agreed that it had to greatly exceed the
135,000 pounds per square inch that makes the brass start to flow. The
explosion vaporized the majority of the case head. A small portion was
still attached to the extractor, which remained in the bolt and
functional. The portion of the shroud that encompasses the lower portion
of the bolt face was sheared off. A small crack was found in the extractor
pocket in the bolt. The front of the shell casing welded itself to the
chamber and could not be removed.
follower, spring and floorplate were violently blown out the bottom of the
magazine. The front magazine retaining tooth was sheared off and the
portion of the magazine protruding below the well was blown into a round
soup can shape. The magazine catch retained the body of the magazine in
receiver walls were bowed out from the chamber ring to the ejector block.
The side rail that retains the cocking handle was bent upward to the
extent that the handle was allowed to blow clear to the side. The force of
the explosion cracked the locking shoulder. The gun remained in battery
throughout the event.
Upon return to DSA the barrel
and receiver were disassembled and measured in various areas. There were
NO cracks in the receiver and the dimension of the receiver ring remained
the same as before the explosion.
Other than the fact that the
shell casing could not be removed from the chamber, there were no
dimensional changes noted in this area either. The gas piston was also
inspected and was found to be damage free and still perfectly
DSA sincerely hopes this
information clears up any misconceptions concerning the strength our SA58
receivers and rifles.
As always, we at DSA are proud
to stand behind our products and continue to offer our lifetime
If you want the best in FAL type
rifles, receivers and accessories, look no further.
the Rock Island streaming videos, just click on a selection below (you
will need to have RealPlayer Version 7 or above installed and
configured within your browser).
09 regular ammo, gas regulator set at 5, looking
at hammer, trigger and sear, 3 shots,
1000 images per second
30 grain bullseye ammo, gas regulator set at 5,
1000 images per second, looking at whole gun
To download and configure a
free version of RealPlayer for
your browser visit the Real Web site.