AR-15 EPT CLASSIC LOWER PARTS KIT
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AR-15 EPT Classic Lower Parts Kit Information
The AR-15 EPT CLASSIC LOWER parts kit is a Palmetto State Armory component package intended for compatible AR-15-pattern lower receivers. Manufacturer number 7778133 combines a standard lower-parts kit with an Enhanced Polished Trigger fire-control group and a conventional safety selector.
This section provides general component, compatibility, and safety information only. It does not include installation steps, firearm-assembly procedures, or trigger-adjustment guidance.
Enhanced Polished Trigger Components
The kit’s primary distinguishing feature is its Enhanced Polished Trigger, commonly abbreviated as EPT. This is a conventional, single-stage fire-control group rather than a self-contained cassette-style trigger.
Its trigger and hammer contact surfaces are polished and treated with a nickel finish. The polishing and coating are intended to reduce friction between the operating surfaces. The EPT should not be confused with a match-grade trigger having a specified 3.5-pound pull weight.
Standard Lower-Parts Configuration
The AR-15 EPT CLASSIC LOWER package is described as beginning with PSA’s standard lower-parts kit. It also includes a standard, non-ambidextrous safety selector. A separate version with an ambidextrous safety uses a different manufacturer number.
Customers should inspect the current itemized package contents rather than assuming that every spring, detent, pin, grip, trigger guard, buffer component, or receiver extension is included. A lower-parts kit does not ordinarily include a serialized lower receiver unless the listing expressly says otherwise.
Compatibility Requirements
This kit is identified for the PSA PA-15 and compatible AR-15-pattern platforms. Compatibility should not be presumed for AR-10, PA-10, AR-9, PCC, rimfire, or nonstandard receivers.
Differences in receiver dimensions, safety selectors, grip arrangements, pins, and bolt-carrier geometry can affect function. A qualified gunsmith should verify compatibility and inspect the firearm after any fire-control or safety component is serviced.
Inspection and Safe Storage
Inspect every component in the AR-15 EPT CLASSIC LOWER kit for corrosion, deformation, cracks, missing parts, or signs of unauthorized modification. Small springs and detents should remain in their labeled packaging until professional service.
Improperly fitted fire-control components may cause failure to reset, safety-selector malfunction, or unintended discharge. Keep the parts kit and all associated firearm components secured against access by children or unauthorized persons.
Product Specifications
- Manufacturer: Palmetto State Armory
- Product line: PA-15
- Manufacturer number: 7778133
- Platform: AR-15
- Included group: Standard lower-parts kit
- Trigger: Enhanced Polished Trigger
- Trigger operation: Single stage
- Trigger and hammer finish: Nickel
- Safety selector: Standard, non-ambidextrous
- General component finish: Black
