Description
Geissele SSA Trigger – Large Pin Model (0.170″) – Precision Meets Reliability for Legacy AR Platforms
The Geissele SSA (Super Semi-Automatic) Trigger – Large Pin Model delivers exceptional control, reliability, and performance for AR-15/M16 rifles that utilize large 0.170″ trigger pins, such as older Colt rifles. Engineered as a combat-proven, two-stage trigger, the SSA offers a smooth, predictable pull that enhances both speed and accuracy—while maintaining total reliability in high-stress environments.
Originally designed for elite military applications, this large pin variant brings Geissele’s world-class quality to legacy platforms without compromise.
Key Features:
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0.170″ Large Pin Compatibility
Specifically designed for AR-style rifles that require large trigger and hammer pins—commonly found in older Colt lowers. -
Two-Stage Precision
First stage (~2.5–2.75 lbs) allows for controlled take-up. Second stage (~2.0 lbs) delivers a crisp, clean break for predictable performance. -
Built for Duty and Defense
Non-adjustable and drop-safe, the SSA is rugged enough for combat, law enforcement, and hard-use civilian builds. -
Smooth and Consistent Pull
Precision-machined tool steel internals provide a buttery trigger feel with a solid reset, helping improve control and shot timing. -
Mil-Spec Safety Compatible
Works with standard AR-15 selectors—no proprietary parts or modifications needed. -
Tool-Free Installation
Simple drop-in installation using large pin receivers—no fitting required.
Specifications:
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Trigger Type: 2-Stage
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Platform: AR-15, M16 (semi-auto only), large pin lowers
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Total Pull Weight: ~4.5 lbs
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1st Stage: ~2.5–2.75 lbs
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2nd Stage: ~2.0 lbs
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Pin Size: 0.170″ Large Pin
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Material: Precision-machined tool steel
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Finish: Corrosion-resistant coating
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Safety: Drop-safe
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Use Case: Duty, tactical, home defense, precision shooting
What’s Included:
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Geissele SSA Trigger (Large Pin)
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Large-size hammer and trigger pins
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Installation instructions
Why Choose the SSA Large Pin Model?
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Purpose-built for legacy Colt ARs using large pin receivers
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Combines proven combat reliability with refined trigger control
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Ideal for serious shooters who want a consistent and durable upgrade
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Made in the USA and backed by Geissele’s commitment to quality craftsmanship
Upgrade Your Legacy Rifle with Proven Precision
The Geissele SSA Large Pin Trigger gives your older AR-15 or M16 platform a modern, reliable, and precise trigger experience—without sacrificing the durability these rifles are known for. If your rifle needs a large pin trigger, this is the premium upgrade it deserves.





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