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

Zenithmrds 01
Zenithmrds 01

MRDS: Zenith’s American-Made Roller-Delayed Rifle For The 21st Century

While the roller-delayed blowback mechanism has proven reliable in platforms like the Heckler & Koch G3, Zenith Firearms has taken this innovative operating system and paired it with a modern, AR-style feature set in its MRDS.

Remington Announces 4th Annual Shoot To Cure Fundraiser

Now in its fourth year, the Shoot to Cure fundraiser is scheduled to take place on September 19 at the historic Remington Gun Club in Lonoke, Ark.

Rifleman Review: Walther Arms PD380

For its latest compact carry pistol, the PD380, Walther Arms combined elements of its Performance Duty Pistol series with its legacy PK380 platform.

Black Beauty: Nimschke’s Masterpiece Sold By Rock Island Auction

German-born Louis Daniel Nimschke is widely recognized as one of the most talented and prolific firearm engravers of the 19th century.

Springfield Updates Saint Victor AR-15 Lineup

Since 2019, Springfield Armory has offered its Saint Victor line of AR-15s with enhanced features, and for 2025, the company has updated those features to keep pace with consumer demands.

In Memoriam: Wiley Clapp

Longtime American Rifleman Field Editor and contributor Wiley Clapp passed away June 4, 2025. He was 90 years old.

Interests



Get the best of American Rifleman delivered to your inbox.