• GNP Defend Gun Oil, 100 ml (3.4 fl oz) aerosol can
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
  • GNP Defend Gun Oil
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GNP DEFEND

GNP Defend Gun Oil

GNP Defend Gun Oil

$11.95
$13.99 $11.95
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Specifications

Chemistry Mineral-based
OwnershipAmerican-owned
NCAGE code9BXGHRegistered supplier
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The Only Gun Oil Military-Certified by WITU

Independently tested on eight service firearms by Poland's national military weapons research laboratory. Every claim below is backed by a signed official military opinion — not marketing.

GNP Defend Gun Oil is a high-performance firearm lubricant that reduces friction, protects against corrosion, and keeps your firearm running reliably under heat, pressure, and harsh conditions. Deep-penetrating aerosol reaches tight tolerances and hard-to-access internal components.

Military Institute of Armament Technology — Test Results (ZBUS-WITU-B3/4/2023)
Zero corrosion after 14 days stored uncleaned at 81–84% humidity
Reliable function at −35°C and +50°C — 4-hour chamber soaks, no malfunctions
10,000-round military lifetime test passed
Visibly reduced carbon fouling vs unlubricated weapons
Non-flammable on weapon surfaces — open flame tested
Tested on: AKMS, GROT M1, PM-98, Glock 17, WIST 94, Walther P99, Mossberg 500, VIS 100.
Military-CertifiedDocumented WITU results on 8 service firearms — not manufacturer claims.
−35°C to +50°CConfirmed reliable across extremes in environmental-chamber firing (−31°F to +122°F).
Corrosion ShieldZero corrosion after 14 days uncleaned at 81–84% humidity.
10,000 RoundsMilitary lifetime test passed, with faster cool-down through the run.
Proof, Not Promises

Every performance claim is backed by a signed official military opinion.

Key Features

  • Extreme temperatures — confirmed −35°C to +50°C with actual firearms, actual firing
  • Heat-resistant formula — the oil itself is rated stable from −76°F to +482°F (manufacturer specification); the WITU range above is certified firearm function
  • Carbon fouling resistance — less buildup, faster and easier cleaning
  • Deep-penetrating aerosol — even coverage on slide rails, BCG, and internals
  • Safe on all modern materials — steel, stainless, aluminum, polymer, Cerakote, Parkerizing, blued, rubber
  • Sizes — 100 ml / 200 ml / 400 ml aerosol
  • 100% Sure Shot Guarantee — not satisfied? We stand behind our product

Clean first with GNP Defend Gun Cleaner, spray a light coat on all metal-on-metal surfaces, cycle the action, and wipe a protective film on exposed metal before storage or carry. Ideal for pistols, rifles, shotguns, and AR-15 maintenance. Explore the complete gun oil collection for the full lubrication lineup, comparisons, and application guides.