Owner's Manual
The ADCOR A-556 ELITE TM has a gas-driven piston
incorporated into the top rail, replacing the standard gas
impingement design. The piston drive ensures reliability by
preventing hot gases and carbon particulates from entering the
receiver. This system reduces heat introduced to the upper
receiver; therefore, Cleaner Lubricant and Preservative ( CLP)
applied to this area will evaporate at a lower rate. This design
allows for less maintenance and increases overall reliability of
the rie.
Our newly designed top rail houses the piston and exhaust
ports, which protect the operator from exhaust and lowers the
rifle’s heat signature.
Mounting the piston on the underside of the top rail
allows the barrel to float freely, reducing muzzle rise
and ensuring greater accuracy.
The lower half of the rail system detaches with a
unique tool-less design for ready access to the
piston base and gas block assembly, enhancing
operational maintenance and cleaning.
The operator in the field can adjust the piston’s cyclical
rate to keep the rifle operating within a controlled rate
of fire by means of a simple twist of the gas plug in
the front piston assembly. No tools are needed to
make this adjustment; the tip of a FMJ cartridge or
firing pin can be used in place of a punch.
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The operator can charge, clear, or forward assist the rifle without losing engagement with the target.
The operator reaches forward and pulls back on the forward charging handle while maintaining target
acquisition.
If the rifle malfunctions, this same charging handle can be used to clear the problem. Simply pull the handle
back, then push forward to re-seat the bolt into the battery.
The ambidextrous forward charging handle can be installed on either side of the rifle without the use of
tools.The handle is spring loaded so that it returns to a forward locked position when not deployed.
To use the handle again, the operator simply reaches forward, swings the handle outward and back in
a single motion.
The forward charging handle is non-reciprocating and can only be engaged by the operator to charge or
clear the weapon.