GNP Defend vs Slip 2000: Honest Comparison
Slip 2000 is one of the most respected names in synthetic gun lubricants, and if you are comparing their products against ours, you are asking the right questions. This is our honest side-by-side: where Slip 2000 is strong, where GNP Defend is different, and how to decide which system fits the way you maintain your firearms. We are GNP Defend, so read this knowing who wrote it — but we will keep the facts labeled and let you judge.
Two brands, two philosophies
Slip 2000 states that its lubricants are 100% synthetic, made without petroleum distillates, silicone or PTFE, and its flagship EWL (Extreme Weapons Lubricant) is marketed as a CLP — cleaner, lubricant and protectant in a single bottle. The appeal is obvious: one product, fewer steps.
GNP Defend is an American-owned brand with products made in Poland and sold in more than 30 countries. We take the opposite approach: dedicated products for dedicated jobs. Degreaser strips old residue first, cleaner does the cleaning, and GNP Defend Gun Oil goes on last as lubrication and protection. Our Gun Oil is deliberately mineral-based and it is not a CLP — it never pretends the cleaning step happened in the same bottle. If you want the full argument on that split, we wrote it up in gun oil vs CLP.
Neither philosophy is a scam and neither is magic. All-in-one trades some cleaning depth for convenience; a dedicated system trades a second bottle for control over each step.
Product lines side by side
| Job | GNP Defend | Slip 2000 | Worth knowing |
|---|---|---|---|
| Lubricate & protect | Gun Oil (mineral-based) | Gun Lube 10-weight, EWL 7-weight, EWL30 30-weight (all synthetic) | Slip 2000 splits viscosities by use; GNP uses one oil across the routine |
| Grease | Synthetic Grease | EWG Extreme Weapons Grease | Both are dedicated greases for rails, lugs and carrier surfaces |
| Everyday cleaning | Gun Cleaner (water-based) | 725 Gun Cleaner/Degreaser (water-based) | Both brands use water-based cleaners here |
| Heavy fouling | Bore Cleaning Foam; Degreaser goes first in the routine | Carbon Killer soak | Different formats: foam-in-bore vs parts soak |
| Air guns, bows, seals | Silicone Oil | No silicone products (excluded from their formulas) | Slip 2000 excludes silicone by design; GNP scopes it to a dedicated product |
Head-to-head: GNP Defend Gun Oil vs Slip 2000 EWL
Chemistry
EWL is a 100% synthetic liquid lubricant formulated without mineral oil or petroleum distillates — that is Slip 2000’s core identity. GNP Defend Gun Oil is mineral-based by deliberate choice: a proven, stable base we have kept consistent rather than a synthetic reformulation. We are not anti-synthetic — our Synthetic Grease is exactly that, used where a synthetic film makes sense: slide rails, locking lugs, bolt carrier surfaces. We simply do not believe one chemistry has to answer every job.
Testing
Slip 2000 publishes laboratory results for EWL: it states the product meets or exceeds MIL-PRF-63460D requirements, with a Falex load-carrying result of +4,500 lbs and a 150-hour salt spray test (their published claims, from bench-test standards).
GNP Defend Gun Oil was tested live-fire by WITU, the Military Institute of Armament Technology in Poland (opinion ZBUS-WITU-B3/4/2023): 10,000 rounds across 8 firearms — AKMS, GROT M1, PM-98, Glock 17, WIST 94, Walther P99, Mossberg 500 and VIS 100 — with zero corrosion after 14 days uncleaned at 81–84% humidity, and the oil itself is non-flammable. GNP Defend also holds NCAGE code 9BXGH, a registered NATO supplier code. To be precise about what that means: it is a supplier registration, not an approval, and WITU issued a test opinion, not a certification.
These are different kinds of evidence. Bench standards measure film strength and corrosion resistance under controlled lab conditions; a live-fire institute test measures whether real service weapons keep running dirty and humid. We think the live-fire result is the harder test to fake — but both are legitimate, and Slip 2000’s lab numbers are nothing to wave away.
Temperature claims
Slip 2000 publishes a single range for EWL: −85°F to 1250°F (manufacturer claim). GNP Defend publishes two numbers and labels them, because they measure different things: Gun Oil is stable and heat-resistant from −76°F to +482°F (manufacturer specification), and it has confirmed reliable firearm function from −35°C to +50°C / −31°F to +122°F (WITU, 4-hour soak). We keep the bench spec and the live-fire confirmation separate on purpose — a lab stability number is not the same claim as a weapon actually cycling at that temperature, and we think shooters deserve to see which is which.
The CLP question
EWL is sold as a CLP. GNP Defend Gun Oil is not a CLP, and we say so plainly: clean first, then oil. If your routine is built on one-bottle maintenance, EWL serves that honestly. If your routine separates cleaning from lubrication, a dedicated oil is the natural fit.
Price
At the time of writing, Slip 2000’s own store lists EWL at $12.88 for 1 oz and $23.13 for 4 oz. GNP Defend Gun Oil starts at $11.95 for 3.4 fl oz (100 ml). Ounce for ounce that is roughly $3.50 per ounce for GNP Defend against roughly $5.80–$12.90 per ounce for EWL depending on the size you buy. Slip 2000 offsets this somewhat with sample sizes and a military/veteran/law-enforcement discount; even so, on price per ounce the comparison is not close.
Which one should you buy?
Choose Slip 2000 if you want an all-in-one synthetic CLP workflow from a brand with published bench-test numbers — EWL is a respected product and we will not pretend otherwise. Choose GNP Defend if you want a dedicated-step system — clean first, then oil — with a mineral-based oil whose protection claims were tested live-fire by a national military institute, at a friendlier price per ounce. And if you already run Slip 2000 cleaners, our Gun Oil still drops into that routine as the final step: the clean-first rule does not care whose cleaner you used.
Frequently asked questions
Is GNP Defend Gun Oil a CLP like Slip 2000 EWL?
No. GNP Defend Gun Oil is a dedicated lubricant and protectant, not a CLP. Our routine is clean first, then oil: use a cleaner and degreaser to remove fouling, then apply Gun Oil as the final protective step.
Is GNP Defend Gun Oil synthetic like Slip 2000 products?
No. GNP Defend Gun Oil is mineral-based by design. Slip 2000 lubricants are 100% synthetic. GNP Defend does use synthetic chemistry where it fits the job: our Synthetic Grease for slide rails, locking lugs and carrier surfaces.
What testing backs GNP Defend Gun Oil?
Gun Oil was tested by WITU, the Military Institute of Armament Technology in Poland, in opinion ZBUS-WITU-B3/4/2023: 10,000 rounds across 8 firearms with zero corrosion after 14 days uncleaned at 81-84% humidity. It is a test opinion, not a certification, and it applies to Gun Oil specifically.
Which is cheaper, GNP Defend or Slip 2000?
GNP Defend Gun Oil starts at $11.95 for 3.4 fl oz (100 ml), roughly $3.50 per ounce. Slip 2000 EWL lists at $12.88 for 1 oz and $23.13 for 4 oz on the Slip 2000 store, roughly $5.80 to $12.90 per ounce depending on size.