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Questions & Answers
Picture has it as a 22 Nosleer. Is that correct? Expert Answer

The photo is a stock photo. This Proof Research PR15 Stainless Steel 300AAC Rifle Barrel is in fact a 300 AAC barrel not .22 Nosler.

by Hunter, Gear Expert, October 28, 2022
Color:
Silver
Caliber:
.300 AAC Blackout
Barrel Length:
16 in
Barrel Profile:
Contour 0.75GB
Gas System Length:
Carbine Length
Gas Block Journal Size-Diameter:
.750 in
Barrel Twist Rate:
1-8
Flutes:
No
Gun Make:
AR Platform
Gun Model:
AR-15
Weight:
2.25 lb
Condition:
New
Gun Type:
Rifle
Firearms Threads Per Inch:
5/8x24

Code: 2SB-ATB-PR15SSA-100578

MPN: 100578

UPC: 843068100578

List: $749.00Save 13%
$649.00

Product Info for Proof Research PR15 Stainless Steel 300AAC Rifle Barrels

Even the slightest touch with the surface of the Proof Research PR15 Stainless Steel 300AAC Rifle Barrels results in marksmanship. Proof Research built these Rifle Barrels from heavy duty, chromium-plated steel to create an incredibly rugged and durable platform that won't let you down. This Proof Research PR15 Stainless Steel 300AAC Rifle 16in Barrel is meant for use with standard, full mass bolt carrier groups, standard mass buffers, and standard rate recoil springs to ensure the best reliability and accuracy. Build a better firearm using these Proof Research PR15 Stainless Steel 300AAC AR-15 Barrels.image

Specifications for Proof Research PR15 Stainless Steel 300AAC Rifle Barrels:

Manufacturer: Proof Research
Color: Silver
Fabric/Material: Stainless Steel
Caliber: .300 AAC Blackout
Barrel Length: 16 in
Barrel Profile: Contour 0.75GB
Gas System Length: Carbine Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-8
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Weight: 2.25 lb
Condition: New
Gun Type: Rifle
Firearms Threads Per Inch: 5/8x24

Features of Proof Research PR15 Stainless Steel 300AAC Rifle Barrels

  • Excellent machinability for gun drilling and reaming, plus exceptional polishability for uniform lapping
  • A homogeneous microstructure which response to heat treatment providing a uniform hardness along the length of the barrel
  • An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing
  • Excellent erosion wear characteristics and corrosion resistance

Package Contents:

  • Proof Research PR15 Stainless Steel 300AAC Rifle Barrels

Proof Research PR15 Stainless Steel 300AAC Rifle Barrels Orderable Models

List of Orderable Models

  • Proof Research PR15 Stainless Steel 16in 300AAC Carbine Rifle Barrel, 300cal, 0.75GB, 8 Twist, 5/8 x 24, 100578 , MPN: 100578 , UPC: 843068100578 , Code: 2SB-ATB-PR15SSA-100578

Proof Research PR15 Stainless Steel 300AAC Rifle Barrels Unavailable & Discontinued Models

List of Unorderable Models

  • Open Box, Dealer Demo, Proof Research PR15 Stainless Steel 16in 300AAC Carbine Rifle Barrel, 300cal, 0.75GB, 8 Twist, 5/8 x 24, 100578 , MPN: 100578-DMO , Code: 2SB-ATB-PR15SSA-100578-DMO
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Last updated 2026-08-18 UTC.