LBE Unlimited AR-15 Trigger Hammer — 8620 Steel | Model ARHAM | UPC 706612407625

Mil-Spec Reliability, Built to Last

Refresh your fire control group with the LBE Unlimited AR-15 Trigger Hammer. Machined from 8620 steel—the material standard trusted for long-wearing AR components—this hammer is engineered for dependable ignition, consistent lock time, and repeatable sear engagement. Whether you’re completing a first build, reviving a hard-used duty rifle, or keeping a spare in your range kit, ARHAM delivers rugged performance with the straightforward fit you expect from mil-spec pattern parts.

Key Features at a Glance

• Material: 8620 steel for durability and long service life

• Compatibility: AR-15 mil-spec pattern lowers and single-stage FCGs (small-pin .154")

• Precision Sear Geometry: Consistent engagement for reliable primer ignition

• Heat-Treat Construction: Engineered to resist peening and premature wear

• Finish: Protective, corrosion-resistant coating (finish may vary by lot)

• Direct Replacement: Ideal for repairs, spares, or budget-friendly assemblies

• Model / UPC: ARHAM / 706612407625

Note: Packaging typically includes the hammer only. Hammer spring, trigger, disconnector, and pins sold separately unless otherwise specified.

Why Choose 8620 Steel for an AR Hammer?

8620 is a case-hardening alloy frequently used in high-stress firearm components. It offers:

• Excellent Wear Resistance: Case depth and hardness help the hammer face and hooks resist deformation.

• Tough Core Strength: A resilient interior absorbs repeated impact without brittle failure.

• Repeatable Geometry: Holds precise sear angles for predictable, safe operation over time.

Built for Practical Performance

• Consistent Ignition: Proper mass and geometry promote reliable strikes across quality ammo.

• Mil-Spec Fit: Sized for small-pin AR-15 lowers to simplify maintenance and upgrades.

• Service-Friendly: A smart replacement during lower receiver rebuilds or when refreshing a high-round-count carbine.

Ideal Use Cases

• General Purpose Builds: Solid, affordable component for new or refreshed rifles.

• Preventive Maintenance: Replace worn hammers to restore crisp function and ignition reliability.

• Armorer Spares: Keep one on hand for quick turn-around repairs.

Installation & Safety

• Unload & Clear: Verify the chamber is empty and the magazine removed before any work.

• Proper Tools: Use quality roll-pin punches and a bench block for clean installation.

• Function Check: After assembly, perform standard AR safety checks: trigger reset, safety engagement/disengagement, and hammer follow testing.

• Gunsmith Recommended: If you’re not experienced with fire-control components, consult a qualified armorer.

Technical Specifications (ARHAM)

• Brand: LBE Unlimited

• Part: AR-15 Trigger Hammer

• Material: 8620 steel, heat-treated

• Finish: Corrosion-resistant (varies by batch)

• Pin Size: Small-pin .154" (AR-15 mil-spec)

• Compatibility: AR-15 mil-spec pattern lower receivers & single-stage FCGs

• Model Number: ARHAM

• UPC: 706612407625

Fitment Notes: Works with most mil-spec style triggers and disconnectors. Some aftermarket match triggers use proprietary geometry—verify compatibility with the trigger manufacturer.

FAQ

Q: Will this hammer work in any AR-15 lower?
A: It’s designed for mil-spec small-pin (.154") AR-15 lowers. It is not intended for large-pin receivers or certain proprietary match trigger groups.

Q: Does it include the hammer spring and pins?
A: Typically no—this listing is for the hammer only, unless the seller specifies otherwise.

Q: Is it ready to drop in?
A: It installs like a standard AR hammer. Always perform a complete function and safety check after installation.

Q: What finish does it have?
A: A protective, corrosion-resistant finish; the exact treatment may vary slightly by production lot.

SEO-Rich Highlights & Buyer Keywords

• LBE Unlimited AR-15 Trigger Hammer

• 8620 steel AR hammer small-pin .154" mil-spec

• ARHAM replacement hammer for AR-15 FCG

• Heat-treated, corrosion-resistant, reliable ignition

• UPC 706612407625

Meta Title (SEO)

LBE Unlimited AR-15 Trigger Hammer — 8620 Steel, Mil-Spec Small-Pin (.154") | ARHAM

Meta Description (SEO)

Upgrade or repair your AR-15 with the LBE Unlimited AR-15 Trigger Hammer. Heat-treated 8620 steel, mil-spec small-pin (.154") compatibility, consistent sear engagement. Model ARHAM, UPC 706612407625.

Structured Data (Product Schema JSON-LD)

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Responsible Use Reminder

Always comply with local, state, and federal laws. After any fire-control work, conduct complete safety checks before live fire and consider having a qualified armorer verify the installation.

The End