Smith & Wesson announced a new M&P15 rifle chambered in 300 Whisper. The S&W rifle will also chamber the popular new 300 BLACKOUT cartridge.
Two versions of the new M&P rifle will be available: one with a Realtree APG finish (shown here) and one with a black finish. The Realtree version of the M&P15 will feature a 5/8-24 threaded barrel along with an A2-style flash hider, while the black version of the rifle will use a Yankee Hill flash hider. Both rifles will have a 16″ barrel.
The black version of the 300 Whisper rifle will have a free floating, 10″ quad rail for accessory attachments. Both rifles are “optic ready” with a Picatinny rail for the addition of traditional or electronic sights.
Both the 300 Whisper and the 300 BLACKOUT cartridges are design to work well with suppressors. According to Smith & Wesson, “The feed ramps and gas system have been optimized to run effectively with a full-range of factory loaded sub-sonic and supersonic ammunition, both suppressed and unsuppressed. The barrel’s twist rate is compatible with a wide variety of bullet weights from 110 to 220+ grains.”
Smith & Wesson M&P15 300 Whisper
|caliber||.300 Whisper/.300 AAC Blackout|
|standard magazine capacity||10 rounds|
|overall length||32" - 35"|
|weight (unloaded)||6.38 pounds|
|receiver material||7075 T6 aluminium|
|barrel material||4140 steel|
The black version of the rifle is no longer offered by Smith & Wesson. The camo (hunting) version of the rifle is still available from the company.
For a time, S&W offered uppers chambered for the .300 Whisper cartridge, but right now it does not appear the company is selling them. A single reference on the company website states that the uppers are “out of stock” and lists a MSRP of $819. The upper pictured matches the uppers that used to be sold on the non-camo version of the rifle (black and using the Yankee Hill flash suppressor.)
Here is the current Smith & Wesson literature on the .300 Whisper upper: