PRS-15 Echo – E556 & E300 Pistol

Feature Overview

The PRS-15 Echo Series is designed for use in law enforcement, military operations, or the sporting field, as well as, competitive shooting. The PRS-15 is a true AR platform tactical rifle. Provides unparalleled accuracy, with a Nitride treated barrel that provides maximum durability and corrosion resistance. A 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability.

  • Direct impingement gas operating system with rotating locking bolt
  • 100% MADE IN THE USA
  • Echo Series Advanced Match Quality Barrels – Accuracy of 1-MOA or less
  • 4150 Chrome Moly Vanadium Steel
  • Black Nitride QPQ Corrosion Resistant Finish, Coated M4 Feed Ramp Extension, Coated Low Profile Gas Block, Coated Gas Tubes
  • Available in 5.56mm NATO and 300 Blackout Calibers
  • Light weight Free Float Enhanced Keymod Hanguards, available in 12.5″ and 15″ lengths
  • The KeyMod system allows advanced modularity past the current 1913 picatinny rail system. Engineered to mil-spec dimensions,eliminating bulk while retaining strength and stability.
  • Short Barreled NFA Rifle and Pistol options available
  • Our 300 Blackout version is available with matched suppressor options for a quieter experience
  • * Items in this series are coated in Black Nitride through the process knows as QPQ (also known in the industry as Ferritic Nitrocarburizing, Melonite, SBN “salt bath nitriding”)


ModelE556 & E300 Pistol
Calibers5.56mm NATO and 300 Blackout
Barrel Length7 in - 9 in
Barrel ProfileMatch HBAR
Action Typesemi-auto
Trigger TypeMil-Spec
Stock TypePhase5 HEX Pistol Tube
Trigger wt5.5-9.0 lb (24-40 N)
Twist Rate1 in 7
Forend Type7" & 12" MLOK Rifle Specialist Gen2 Handguards
Grip TypeErgo Sure-Grip
Receiver & FinishForged 7075 Aluminum, Type III Hard Anodized
Overall length22 in - 24 in
Overall Width2.6 in (66 mm)
Height7.5 in (191 mm)
Threads1/2 in - 28 tpi (5.56) 5/8 in - 24 tpi (300)
AccessoriesSingle point sling mount, magpul aluminum trigger guard
Operating SystemDirect Gas Impingement
Weight w/o Mag6.5 lb (2.9 kg)
Mags Included1 - 30rd Aluminum Mil-Spec Magazine

Feature Highlights

Spec Sheet PDF

SKUModelCaliberBarrel LenBarrel ProfileHandguardGrip TypeOverall LengthStock TypeThreadsWeight w/o MagSightsMSRP
PRS15-E556-75-S7-P5E556 Pistol5.56mm NATO7 inMatch HBAR7" samson evolutionErgo Sure-Grip27.5 inPhase5 HEX Pistol Tube1/2 in - 28 tpiTBDoptionalTBD
PRS15-E556-75-T125-P5E556 Pistol5.56mm NATO7 inMatch HBAR12.5" TRS KeymodErgo Sure-Grip27.5 inPhase5 HEX Pistol Tube1/2 in - 28 tpiTBDoptionalTBD
PRS15-E300-9-T125-P5E300 Pistol300 Blackout9 inMatch HBAR12.5" TRS KeymodErgo Sure-Grip22 inPhase5 HEX Pistol Tube5/8 in - 24 tpiTBDoptionalTBD
PRS15-E300-9-S7-P5E300 Pistol300 Blackout9 inMatch HBAR7" samson evolutionErgo Sure-Grip22 inPhase5 HEX Pistol Tube5/8 in - 24 tpiTBDoptionalTBD

Other variations available

Echo Rifle

Echo SBR

Echo EQR