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

Stoeger STR-45 Combat pistol
Stoeger STR-45 Combat pistol

New for 2026: Stoeger STR-45 Combat Pistol

For 2026, Stoeger adds the .45 ACP chambering to its Combat line of STR handguns.

Battle Of The Kit Guns: .22 Long Rifle vs. .22 WMR

When it comes to the .22 Long Rifle or the .22 WMR, which of these two popular rimfire calibers is the better fit for a small-frame revolver? To find out, we put a Taurus 942 in both chamberings to the test.

Preview: American Hunting Rifles Ruger Reflex Sight

Designed and built by a custom riflemaker, and applicable across a broad range of Ruger platforms that feature that company’s distinctive integral scope mount dovetails, the American Hunting Rifles Ruger Reflex Sight Mount is available in either RMR or Shield red-dot footprints.

Barnes & Sierra Launch Free TrueData Ballistic Calculator

With Doppler-verified ballistics, precise environmental inputs and tools that match real-world performance, the TrueData Ballistic Calculator equips hunters and shooters with the ability to make accurate shots.

New for 2026: Benelli Ethos Cordoba Shotguns

Benelli expands its Cordoba line of shotguns with six new models.

New for 2026: New Products from Magpul

Magpul announces new metal-magazines, new stocks and pistol frames.

Interests



Get the best of American Rifleman delivered to your inbox.