The Geissele Super Semi-Automatic (SSA) Trigger is the semi-auto only version of a
select fire trigger that Geissele makes for U.S. SOCOM. The SSA is a non-adjustable
combat trigger, it is not a match trigger. The second stage break is like a carrot rather
than an icicle. Suitable for Close Quarters Battle (CQB) and mid-range carbine work,
the Geissele SSA is also the perfect trigger for Squad Designated Marksman (SDM)
rifles.
1. Performance Advantages for the Shooter
- The Geissele SSA has a pull weight of about 4.5lb. 2.5 lbs on the first stage and
2lb on the second stage. The pull weights and sear engagement are non
adjustable.
- Trigger and hammer are made from quality tool steel
- Sear surfaces are cut by a wire edm machine. Sears cut this way are very
accurate and the non-directional surface finish of the wire edm gives a smooth
trigger pull without the associated grittiness of directional machining marks left by
a milling cutter.
- The initial force needed to start the disengagement of the sear surfaces is low
and the force linearly increases at a low rate. This helps the shot to fall at the
initial point of aim and aids in building shooter confidence in his weapons ability
to put the rounds where his sight is pointing.
- The Geissele SSA trigger allows the shooter to slap through the trigger pull on
close in shots but also set up a long range shot with a crisp trigger break.
- A full force hammer spring is used for quick locktime and positive ignition of all
types of ammo. No lightened hammer spring is used.
- The hammer is lighter than a standard AR15 hammer. The lightened hammer
favorably decreases locktime and increases accuracy of the weapon, especially
for snap shots.
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2. Advantages for the Armorer
- The Geissele SSA is a simple design that is very similar to the original M16
trigger. The number of parts is identical.
- There are no adjustment screws to come loose.
- All springs are captive; they will not get lost during disassembly in the field
- The entire trigger can be dissembled for cleaning (no rivets or staked parts)
- The trigger can be installed without removing the safety
- Sear engagement is pre-set from the factory.
- Hammer and trigger pins are a close slip fit into nominal receiver holes so the
trigger can be installed and removed with rudimentary tools.
- Triggers come with a slave pin for the trigger/disconnector assembly for easy
installation.
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3. Safety Advantages
- The Geissele SSA is a 2 stage trigger where there is generous overlap of the
sear surfaces which contributes to safety and a low tendency of any inadvertent
movement of the trigger to discharge the weapon.
- The Geissele SSA has a patented pseudo sear that is almost identical to the
standard AR15 single stage sear. However, this secondary sear has surfaces
that never touch during normal operation. This sear prevents the hammer from
falling unless the trigger is pulled.
- The secondary safety sear contributes to shooter confidence in dynamic/vehicle
situations where a fellow shooter’s muzzle may cover him. There is firm
knowledge that even with the safety in the fire position the weapon can never
discharge unless the trigger is pulled.
- Trigger timing is robust and parts have been sized to operate with a certain
amount of wear to the working surfaces. The trigger is designed to operate in
dusty, abrasive environments that cause wear.
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| Geissele Automatics manufactures two
different triggers for the AR15 rifle. Our flagship trigger is the
Hi-Speed National Match. The Hi-Speed is a fully adjustable, ultra low
lock time trigger that is designed for National Match competition and
long range sniper applications. The SSA compliments the Hi-Speed as it
fills the need for a simple, rugged combat carbine trigger. When trying
to choose between the two triggers Geissele recommends that the shooter
first determines the optic that his weapon will use. At 4x and below
Geissele recommends the SSA trigger. At 4x and above the Hi-Speed is
recommended due to its icicle break that can be adjusted to as low as
0.5lb. |
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