Product Overview and Introduction

Experience absolute precision and lightning-fast split times with the Patriot Ordnance Factory (POF) Straight 3.5 lb Drop-In Trigger System – MPN: 00858. Designed as a complete, self-contained cassette unit, this match-grade trigger delivers an ultra-crisp, creep-free single-stage break paired with a modern flat-bow profile. Whether you are building a custom AR-15 competition rifle, upgrading a tactical AR-10, or seeking maximum accuracy for your platform, the POF 00858 combines effortless installation with exceptional performance.

Built to rigorous military and commercial standards, this trigger system eliminates the mushy pull of factory mil-spec triggers, giving you an immediate wall and a tactile, instantaneous reset that speeds up follow-up shots under pressure.

Self-Contained Drop-In Design and Flat Bow Ergonomics

Engineered for seamless installation and superior shooter comfort, the POF drop-in system packs advanced features into a robust aluminum housing:

• Single-Stage Match Break: Factory-tuned to a crisp, clean 3.5-pound pull weight with zero take-up and absolute zero creep for precision shot placement.

• Straight Flat Trigger Bow: The flat face provides a consistent, repeatable surface for your finger, offering enhanced leverage and making the pull feel even lighter and more direct.

• Pre-Assembled Cassette Unit: Housed in a durable, hard-coat anodized aluminum casing that drops straight into your lower receiver without requiring complex spring alignment or gunsmithing.

• Short, Positive Reset: Features an exceptionally short, tactile reset that enables rapid split times during fast-paced string firing.

• KNS Anti-Walk Pins Included: Ships complete with precision anti-rotation pins to ensure the trigger module stays securely locked in place during high-round-count sessions.

Premium Engineering and Reliable Ignition

Patriot Ordnance Factory crafts their triggers using high-grade tool steel components that are wire-EDM cut and heat-treated for maximum durability. Coupled with a powerful hammer spring, it ensures positive, 100% reliable primer ignition across all commercial and military ammunition types without light strikes.

Key Features and Benefits

• Drop-In Convenience: Complete self-contained cassette installs in minutes.

• Flat Bow Leverage: Straight trigger face enhances finger placement and control.

• Crisp 3.5 lb Break: Clean single-stage release eliminates anticipation flinch.

• Anti-Walk Pins Included: Adds structural stability and prevents pin migration under heavy recoil.

Specifications

• Product Type: AR-15 / AR-10 Single-Stage Drop-In Trigger Assembly

• Manufacturer Part Number (MPN): 00858

• Platform Compatibility: AR-15 / AR-10 Mil-Spec Lower Receivers (Small Pin .154-inch)

• Trigger Style: Straight / Flat Bow

• Pull Weight: ~3.5 lbs (Fixed Single-Stage)

• Housing Material: Hard-Coat Anodized Aluminum Cassette

• Included Accessories: KNS Anti-Walk / Anti-Rotation Pins

• Manufacturer: Patriot Ordnance Factory (POF-USA)