Smith & Wesson M&P15 .300 Whisper

by
posted on September 17, 2012
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
mp15-300-whisper.jpg

Smith & Wesson took one of its most well known designs and paired it with an increasingly popular caliber to create the M&P15 300 Whisper. Though chambered in .300 Whisper, it will also safely fire .300 AAC Blackout.

The 300 Whisper builds upon the brand's established M&P line, offering sub-sonic and supersonic capabilities with consistent performance and accuracy. The 300 Whisper is easy to shoot, accurate and versatile—it's a comfortable fit when hunting, at the range for some recreational shooting or deployed for home protection.

Technical Specifications:

Model: M&P15 300 Whisper
Caliber:
.300 Whisper, .300 AAC Blackout
Capacity:
10 Rounds
Action:
Semi-Auto
Barrel Length:
16"
Barrel Twist:
1 in 7.5" 5R Rifling
Overall Length:
35" Extended/32" Collapsed
Stock:
6 Position CAR
Weight:
6.38 lbs.
Barrel Finish:
Melonite
Receiver Finish:
Realtree APG
MSRP: $1,119

Latest

Building an AR-15 lower receiver
Building an AR-15 lower receiver

Review: Assembling an AR-15 Lower Receiver

Building a high-quality AR-15 starts with selecting appropriate components.

Suppressors Deregulated in South Dakota

In a move anticipating a further reduction of restrictions, South Dakota has removed the law requiring the Federal stamp.

The Pursuit Of Increased Muzzle Velocity Comes With A Price

The quest to make our firearms’ projectiles move downrange at ever higher velocities cuts across multiple shooting pursuits and predates anyone alive today.

Review: Springfield Armory Hellcat .380 Pistol

Springfield Armory just released its popular Hellcat double-stack, striker-fired pistol in .380 ACP, and it might be an ideal option for armed citizens looking for a soft-shooting handgun for concealed carry.

New for 2026: Langdon Tactical Technology Beretta Cheetah Pistol

Beretta's .32 ACP Cheetah gets the Langdon Tactical upgrade package.

The Armed Citizen® Feb. 16, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.