Expo Arms/FCD Extended Stoner 63 Style Compensator - Dead Air Keymo Mount - 1/2x28

Expo Arms/FCD Extended Stoner 63 Style Compensator - Dead Air Keymo Mount - 1/2x28 - Muzzle Device for AR-15 - view 1

Expo Arms

Overview

The Expo Arms/FCD Extended Stoner 63 Style Compensator is designed specifically for 5.56 NATO caliber firearms, providing effective recoil management and muzzle rise reduction during rapid fire. With a 1/2x28 thread pitch, it easily attaches to compatible barrels, while the nitride finish enhances durability and resistance to corrosion. This compensator is commonly found in mid-length gas system builds, making it a practical choice for those seeking improved stability in their AR-15 configurations.

Specifications

MPN6315KM-L
TypeCompensator
FinishNitride
Thread Pitch1/2x28
MaterialSteel
Caliber5.56 NATO

Available Merchants

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Build history on GunPartPicker

Builders on GunPartPicker first added the Expo Arms/FCD Extended Stoner 63 Style Compensator - Dead Air Keymo Mount - 1/2x28 to a build in February 2026.

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Frequently Built With

The part most often added in each category by the 8 builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

88.3%
AR-1588.3%
AR-109.1%
AR-92.6%

Caliber

67%
5.56 NATO67%
.223 Wylde14.5%
300 Blackout6.3%
.308 Win3.9%
9mm1.9%
Other6.4%

Gas System

48.9%
Mid-Length48.9%
Carbine28%
Rifle11.8%
Pistol8.9%
Blowback1.5%
Other0.8%

Builds Featuring This Part

See all 1 →

Builds in the community that include the Expo Arms/FCD Extended Stoner 63 Style Compensator - Dead Air Keymo Mount - 1/2x28

BuildPartsTotal
KE Arms 16" 5.56 build
KE Arms 16" 5.56
28$3433.16

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