Smith & Wesson M&P15 .300 Whisper

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
.300 Whisper, .300 AAC Blackout
10 Rounds
Barrel Length:
Barrel Twist:
1 in 7.5" 5R Rifling
Overall Length:
35" Extended/32" Collapsed
6 Position CAR
6.38 lbs.
Barrel Finish:
Receiver Finish:
Realtree APG
MSRP: $1,119

For Further Reading:

SHOT Show 2012: The Smith & Wesson M&P15 300 Whisper


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4 Responses to Smith & Wesson M&P15 .300 Whisper

Me wrote:
September 29, 2012 Hornady makes them and I do suggest their ammo. Very hi quality and worth every penny not to mess up your gun with cheap ammo (it is pricey though).

Ruffian wrote:
September 28, 2012

Are the rounds factory rounds or does one have to custom load them ???? if factory who ?

Rob in TN wrote:
September 24, 2012

Absolutely. A 300 AAC Blackout(300 Whisper)upper would fit any AR lower, uses standard AR magazines and the 300 has ballistics similar to 30/30 and 7.62x39. Great hunting round.

Walkin trails wrote:
September 20, 2012

Another interesting concept. Can you put a Whisper upper on an standard AR lower, and would that 300 be good for white tail in brush?