Sierra Gameking Suppressor 300 AAC Blackout 220gr Matchking 20/Box

Name: Sierra Gameking Suppressor 300 AAC Blackout 220gr Matchking 20/Box
Brand: Barnes Bullets
Availability: InStock

Barnes Bullets · Ammo

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Sierra Gameking Suppressor 300 AAC Blackout 220gr Matchking 20/Box

Best price

$23.99at GunMag Warehouse

In stock Lowest in 30 dayschecked Nov 3, 2026

Buy at GunMag Warehouse

Compare 13 stores

Fits and works with

Caliber: 300 Blackout · Shop matching ammo

Specifications

Manufacturer: Barnes Bullets

Compatibility

Caliber: 300 Blackout

Materials and features

Bullet weight: 220 gr
Bullet type: OTM / HPBT
Casing: Brass
Rounds per box: 20 rds

Where to buy

Store	Price	Availability	Buy
GunMag Warehouse Best price	$23.99checked Nov 3, 2026	In stock	Buy at GunMag Warehouse
Kentucky Gun Co	$26.77checked Nov 13, 2026	In stock	Buy at Kentucky Gun Co
OpticsPlanet	$26.99Salechecked Nov 13, 2026	In stock	Buy at OpticsPlanet
MidwayUSA	$27.99checked Nov 13, 2026	In stock	Buy at MidwayUSA
Sportsman's Warehouse	$27.99checked Nov 13, 2026	In stock	Buy at Sportsman's Warehouse
Ammunition Depot	$35.49checked Nov 13, 2026	In stock	Buy at Ammunition Depot
Battlehawk Armory	$24.28Salechecked Nov 13, 2026	Check store	Buy at Battlehawk Armory
Natchez	$24.99Salechecked Nov 13, 2026	Check store	Buy at Natchez
Classic Firearms	$25.99checked Nov 13, 2026	Check store	Buy at Classic Firearms
GrabAGun	$26.49Salechecked Nov 13, 2026	Check store	Buy at GrabAGun
Guns.com	$27.99checked Nov 13, 2026	Check store	Buy at Guns.com
Bereli	$32.99checked Nov 7, 2026	Check store	Buy at Bereli
Brownells 17.76% off · ends Nov 15 · exclusions apply	$26.99checked Nov 13, 2026	Out of stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $23.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Ammunition Depot	$35.49	$24.99	$35.49
Battlehawk Armory	$24.28	$21.90	$24.28
Bereli	—	$32.99	$32.99
Brownells	$26.99	$26.99	$26.99
Classic Firearms	$25.99	$25.99	$25.99
GrabAGun	$26.49	$26.49	$26.49
GunMag Warehouse	—	$23.99	$23.99
Guns.com	$27.99	$25.99	$27.99
Kentucky Gun Co	$26.77	$24.04	$26.77
MidwayUSA	$27.99	$27.99	$27.99
Natchez	$24.99	$24.99	$24.99
OpticsPlanet	$26.99	$26.99	$30.49
Sportsman's Warehouse	$27.99	$27.99	$27.99

Since Sep 28, 2026.

About this part

The Sierra Gameking Suppressor 300 AAC Blackout 220gr Matchking 20/Box is a 300 Blackout ammunition from Barnes Bullets. It's sold by 13 stores (6 in stock), from $23.99 to $35.49. The lowest in-stock price in the last 30 days was $23.99 at GunMag Warehouse.

From the manufacturer

BARNES BULLETS SUPPRESSOR SERIES 300 AAC BLACKOUT SIERRA GAMEKING RIFLE AMMO SUPPRESSOR SERIES is a purpose-built ammunition line engineered for the explosive growth in suppressor ownership, featuring premium Sierra projectiles loaded to Barnes' exacting standards. Our initial subsonic loads utilize clean-burning propellants to reduce gas blowback, improve cycling in semi-auto platforms, and deliver noticeably quieter shots through suppressor-ready firearms. SPECS Product Line: Suppressor Series Cartridge: 300 AAC BLK Purpose: Match/Target Pursuit: Target, Medium Game Bullet Material: Jacketed Lead Core Mfg: Barnes Bullets