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The Ontario Knife Company 8665 Rat-3 features a 3.9-inch carbon steel flat blade with a straight back design, paired with a durable black nylon sheath. Ambidextrous and lightweight at 7.9 inches total length and 0.28 kg, this American-made fixed blade knife is engineered for utility and reliability, making it a top choice for hunting, tactical, and outdoor enthusiasts.














| ASIN | B075S5BK2V |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #311,841 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1,040 in Fixed Blade Hunting Knives |
| Blade Edge | Flat |
| Blade Length | 3.9 inches |
| Blade Material | Carbon Steel |
| Blade Shape | Straight Back |
| Blade Type | Fixed Blade |
| Brand | Ontario Knife Company |
| Brand Name | Ontario Knife Company |
| Color | Black/Tan |
| Customer Reviews | 4.6 out of 5 stars 717 Reviews |
| Global Trade Identification Number | 00071721086659 |
| Hand Orientation | Ambidextrous |
| Handle Material | Carbon Steel |
| Included Components | Knife with sheath |
| Item Length | 7.9 inches |
| Item Shape | Rectangular Prism |
| Item Type Name | Ontario Knife Company, Rat-3, Plain Edge with Black Nylon Sheath |
| Item Weight | 0.28 kg |
| Manufacturer | Ontario Knife Company |
| Model Name | 8665 |
| Model Number | 8665 |
| Number of Items | 1 |
| Part Number | 8665 |
| Recommended Uses For Product | Utility |
| Reusability | Reusable |
| Size | 3.9" |
| Special Feature | Durable |
| Special Features | Durable |
| Style | Modern |
| UPC | 071721086659 |
| Unit Count | 1 Count |
| Warranty Description | Manufacturer Warranty |
C**R
The single best fixed blade under $100: Ontario RAT-3
The Ontario Knife Company Randall’s Adventure Training 3, or the OKC RAT-3 is the best bang for your buck fixed blade in the survival and tool knife market. Micarta handles, 1095 carbon steel, full tang, and MITUSA! This is one of the most utilitarian and practical fixed blades on the market. Pleasantly comfortable in hand, not oversized so you can carry it most places, tough as hell, and pretty easy to get a good edge on. If you can destroy this knife, kudos. The plastic sheath leaves some desire (the nylon is even worse IMO) but did come with a tek-lok adapter when I purchased mine (may not anymore). It’s the perfect size knife for scout carry (the eyelets are the perfect width for a standard duty belt and some 550 cord) or thrown in a go bag. Buy with confidence. Pictured is mine after almost a decade of use and abuse on Active Duty in the US Army, 2 deployments, and multiple trips to Atropia.
J**T
Great knife
I have multiple esee 3s as well as the Rat 3 and I have to say I prefer the Rat 3. I like the Rat 3 scales better compared to the Esee 3 as it feels better against my skin when I carry it IWB. I also like the coating on this knife better compared to the Esee as the coating on the Esee sometimes cause more friction due to it being a much thicker coating when passing through material. I actually strip the coating off my Esee knives just because it annoys me in that regard. The Rat 3 sheath is usable but I would recommend ditching it and purchase the polymer Esee 3 sheath as it will fit the Rat 3 perfectly or a kydex sheath. That way you get a ton more carry options and can carry on the belt, IWB, or attach to something. I haven't noticed much of a difference in the heat treat between the Esee or the Rat 3. The Esee is definitely slightly harder steel and will have slightly better edge retention but it's not enough difference to make a difference. Factory edge sucks and needs to be sharpened but I put my own edge on every knife so that doesn't bother me. It's a great knife that will serve anyone well. My only gripe is these are expensive now. I remember purchasing mine a few years ago for far less. But everything is expensive now I guess.
D**D
love ESEE and this is their predecessor
found this in a search for a good ESEE knife
E**L
Good knife, terrible sheath
You get what you pay for for this. The knife is built tough. I wasn't impressed at all with the factory edge it seems like Ontarios quality has suffered recently. Not a big deal since I'll sharpen it anyways. But the sheath that came with it is complete garbage. It's clunky and not to mention you can't just slide the knife in or out with ease. You'll want to get another sheath to actually edc this thing. I wanna say they used to come with a kydex one but not too sure. Overall good knife with a little adjustment
D**S
Montana Approved Hunting Knife
Everything about this knife is perfect for hunting & ultimately gutting a Deer, Antelope or Elk. To begin with the fit in your hand is just downright natural, it’s not forced into position but can be held in all the positions one needs with confidence it is going to be maneuverable for all the tasks from the 1st puncture to cutting around the anus, it is almost magical in your hand. There’s nothing out of place awkward or unbalanced with this knife. While my hand is XL & initially I wanted another 1/2” to 3/4” length to the handle, in useage it wasn’t how I held the knife. I found I was choking up on the blade for better control & that wasn’t a second thought afterwards. While it comes sharp enough, I like to add a little touch up before the season tobreally make it like cutting through butter. It holds an edge easily through multiple deer or one big bull elk. The grip has a natural feel & never was slippery even within wet from the harvesting. While I love my pocket knives, they fill up with stuff during the process. Then can be slippery even with the best of handle material as the build up tends to constantly leak out onto your grip causing slipping here & there. If needed, a quick wipe to clean your hand off & with this knife your moving forward without a second thought. I have never worried about my grip slipping with this knife, all because of its shape, grip & sharpness. As mentioned before I like to choke up on this knife & I don’t fear my hand slipping forward. The blade belly cut out for my 1st finger & grippy blade spine near the handle secure my hand from moving forward. I’ve looked for years & tried many knives over the decades & this one is my go to gutter!
J**.
great product (not the sheath)
great knife. sheath sucks. needs kydex scheath
A**7
Best EDC Fixed Blade Knife
It’s small enough to carry on your belt without scaring non-knife people in public. The steel sharpens easily and maintains an edge well. It’s perfect for detailed carving work. Handle will absorb sweat and oil over time and turn a darker shade, but who really cares. It functions. The sheath could be better but it functions to protect the knife and keep it from coming out. Worth the money and with care will last a lifetime.
M**F
Handle is quite short.
• This is a Small / Medium size, Fixed Blade, Survival Knife. It is small in the hand due to an abbreviated grip length but the overall design feels stiff and strong. The 0.130” (3.34 mm) blade stock is typical and adequate for this size handle. The handle is shorter than I expected. • Full Flat Taper Grind blade is strong behind the tip. Tip is on the handle centerline. • Black Powder Coated blade to prevent corrosion on the 1075 carbon steel. • The handle scales provide a short grip length of 3-1/2”and are just long enough to get a four finger fist grip with bare hands. It is an abbreviated grip better suited for a three finger grip with the index finger in the choil. These scales are slab sided and rather thin at only ½” total handle width. I’m not a big fan of these flat sided grip panels. • Pommel tang rear edge is rounded and slightly protrudes past the handle scales which provides the ability to strike objects. • Tapering ‘Pinch Grip’ bevels on the front of the scales for precise Bushcraft blade work. • The moderately crisp spine edges will still allow fire steel striking. The blade spine does not have false edge swage. • Coarse thumb jimping on blade spine at ricasso is very grippy. • The Cordura nylon sheath provides a secure, non-rattling grip on the knife. Having two retaining straps on such a short small knife is pointless. One strap just behind the front handle choil would suffice. • Handle screws are only 1/16” Allen hex drive heads. Should be a larger size IMHO. • This is a good all-purpose lightweight hiking knife. Sheath is overdone and kind of stupid.
P**O
Ontario rat 3
Envio rápido e seguro. Faca excelente muito bem acabada e de tamanho ideal pro uso no edc.
H**0
Solid versatile knife! A hunters must have!
I have the Rat-5 and want the Rat-3. I bought this one for a buddy and it fits better in the hand (subjective). The weight and length of this blade is great for skinning animals if you're a hunter. My Rat-5 skinned an adult moose no problem not needing a sharpening like my Gerber 3" blade 3 years prior. The Rat-5 is better for making kindling in the bush but that's really it. I love this blade for the light weight and length of blade for fine work. Worth every penny.... the sheath is horrible so I made my own!
T**I
細かい作業に最適!
RAT5も持っているけど細かい作業に購入。 丁度良いサイズです。
A**O
Exelente pequeñín
Un buen cuchillo para un EDC. compacto y contundente, buena manofactura.
A**.
Excelente calidad
Excelente calidad. Acero, maquinado y tratamiento térmico muy buenos. Únicamente la funda deja un poco que desear pues es mucho más voluminosa de lo necesario. Aún así muy buen producto.
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