CMMG PART KIT AR15 LOWER PINS/SPRING

Description

Small parts have a way of disappearing at the worst possible moment during a build or detail strip — a detent bounces off the bench and is gone, a spring launches into the carpet and stays there. The CMMG AR-15 Lower Pins and Springs kit exists for exactly that situation. It covers the full set of consumable lower hardware so you are not dead in the water waiting on a single two-dollar part to ship.

The kit includes hammer and trigger pins, hammer and trigger springs, a disconnector spring, a safety selector detent and spring, a buffer retainer and spring, a bolt catch spring and plunger, a bolt catch roll pin, a trigger guard roll pin, and takedown detents and springs. Takedown pins themselves are not included. That selection maps directly to the parts most likely to go astray during assembly or to wear first over a long service life, making this a practical addition to any build station or range bag.

All components are manufactured to mil-spec dimensions, so they are drop-in compatible across standard AR-15, M16, and M4 pattern lowers without fitting or modification. Keeping a set on hand means a stripped lower can go from parts to functional in one session without waiting on backordered individual components, and it gives any build a reliable baseline of hardware before trigger groups or other upgrades are layered in.