AR-15 – Lower Pins and Springs Kit – Mil-Spec
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
The CMMG AR-15 lower pins and springs kit provides common lower receiver springs, pins, detents, and small parts for compatible AR-15 lower receiver assembly or repair.
Fitment
- Fits compatible AR-15 lower receiver builds.
- Intended for AR-15 lower receiver small-parts replacement or assembly.
What it does
This kit supplies the small lower receiver parts commonly needed when assembling or servicing trigger pins, takedown pins, selector detents, bolt catch parts, and buffer retainer components.
Why it’s worth it
Lower receiver small parts are easy to lose and annoying to buy one at a time. This kit keeps the usual troublemakers together so a simple lower build does not turn into a parts scavenger hunt.
Specs
- Brand: CMMG
- Platform: AR-15
- Kit type: Lower pins and springs
- Parts standard: Mil-spec style lower receiver small parts
What’s included
- Trigger spring
- Hammer spring
- 2 hammer/trigger pins
- 2 takedown springs
- Disconnector spring
- Safety selector detent
- Safety selector spring
- Bolt catch spring
- Bolt catch plunger
- Bolt catch coil pin
- Trigger coil pin
- Buffer retainer
- Buffer retainer spring
- Takedown detent
Tools needed
AR lower assembly tools, punch set, bench block, small hammer, pivot pin tool, and safety glasses.
Install notes
Install carefully and control spring pressure. After assembly, verify safety selector function, trigger reset, bolt catch operation, buffer retainer function, and takedown/pivot pin retention.
Verify before you buy
Verify this kit is what you need. This is a lower pins and springs kit, not a complete lower parts kit with every control included.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.
