Custom/BCM .300 Blackout AR-15

Category	Pistols
Manufacturer	KE ARMS LLC
Model	KE-15

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SoldSold OnOctober 15, 2026

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Condition · OSA Standard

100–90%NEW

89–75%EXCELLENT

74–60%VERY GOOD

60–40%GOOD

<40%FAIR

NewWell Used

Lot Notes

Custom .300 Blackout AR-15 built with a .300 BLK upper on a KE Arms lower. This rifle is heavily upgraded and remains in very good mechanical condition. It is equipped with a BCM MCMR-10 handguard, Dead Air flash hider muzzle device, Geissele 2-stage trigger, and silent capture buffer. The finish shows small scratches and dings from use and handling.
This build offers a practical upgraded .300 Blackout configuration with quality components already installed. The BCM MCMR-10 handguard provides a lightweight modern rail setup, the Geissele trigger improves trigger feel, the Dead Air flash hider supports compatible muzzle device use, and the silent capture buffer adds a smoother recoil system feel. With its KE Arms lower, upgraded parts package, and very good mechanical condition, this is a solid .300 BLK AR-15 for buyers looking for more than a basic factory rifle.
Specifications
Manufacturer: Custom AR-15 build
Model: .300 Blackout AR-15
Action: Semi-automatic rifle
Caliber: .300 Blackout
Upper: .300 BLK upper
Lower: KE Arms lower
Handguard: BCM MCMR-10 handguard
Trigger: Geissele 2-stage trigger
Buffer: Silent capture buffer
Muzzle device: Dead Air flash hider
Condition: Used; very good mechanical condition
Finish: Small scratches and dings from handling/use