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Smith & Wesson M&P15 300 Whisper Centerfire Rifle

Item # 721404
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Additional Information:

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  • To buy online and deliver to a Gander Mountain store or an Independent Firearms Dealer, simply add this item to your cart. Click here for additional details.
  • Firearms shipping charge of $25.00 per item.
  • You must be at least 18 years old to purchase this item. State and local laws may vary.
  • Additional discounts do not apply.


  • Very Effective, Short Range Round

  • Low Recoil and Muzzle Blast

  • Barrel Threaded to 5/8-24

  • A2-Style Flash Suppressor

Product Summary

Manufactured on the M&P15 modern sporting rifle platform. Chambered in .300 Whisper, it will also safely fire .300 AAC Blackout. Very effective, short range round (approx. 200 yards) for hunting deer-sized game. Tactical application for the cartridge is for short-range target shooting. Low recoil and muzzle blast. Designed to operate with or without sound suppressor. Barrel threaded to 5/8-24. A2-Style Flash Suppressor. Feed ramps and gas system optimized to run efficiently with a full range of factory loaded sub-sonic and super-sonic ammunition, both suppressed and unsuppressed. Barrel twist rate (1 in 7.5") is compatible with a wide variety of bullet weights from 110 to 220+ grains.

Model M&P15 300 Whisper
Type Centerfire Rifle
Action Semi-Auto
Caliber .300 Whisper
Barrel Length 16"
Weight 6.38 Lbs.
Finish: Stock RealTree APG
Finish : Barrel & Receiver RealTree APG/Blued
Capacity 10-Round Magazine


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