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

Sierra’s MatchKing X
Sierra’s MatchKing X

Hunting with a Legend: Sierra’s MatchKing X Bullet

Sierra’s MatchKing is a highly respected target bullet, but for the new trend of long-range hunting, the design needed to offer improved terminal performance. Enter the MatchKing X.

The Armed Citizen® Oct. 19, 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.

Review: Stoeger STR-9 Thinline

The new Stoeger carry gun loses nothing—except some weight and girth. This is the Stoeger STR-9 Thinline.

5 Great Products for Your Next Hunt

These five products will help boost your chances at success in the field.

Small Calibers for Self-Defense: Addressing Common Myths & Criticisms

For decades, small cartridges like the .22 Long Rifle were derided as incapable rounds for defensive use and were even considered dangerous for the user by some. Today, those critiques deserve a second look.

New for 2026: HUXWRX Flow 9k PCC & Flow 9 M Suppressors

Continuing the legacy it first established as Operator Suppressor Systems, HUXWRX is still introducing new and mission-specific flow-through suppressors, with its latest products being the FLOW 9 M and FLOW 9k PCC.

Interests



Get the best of American Rifleman delivered to your inbox.