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The SOG Pentagon FX Covert is a compact, professional-grade fixed blade knife featuring a 3.41-inch double-edged CRYO CPM S35VN steel blade with full-tang construction for unmatched strength. Its ergonomic G10 handle offers a secure, moisture-resistant grip, while the minimalist GRN sheath supports versatile, discreet carry options including belt, MOLLE, and Velcro mounting. Designed for tactical professionals and enthusiasts who demand high performance in a covert package, this knife balances durability, concealability, and precision.












| ASIN | B09C6PH5SP |
| Age Range Description | Adult |
| Best Sellers Rank | #168,751 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #296 in Tactical Knives |
| Blade Edge | Compound Bevel |
| Blade Length | 3.41 Inches |
| Blade Material | CRYO CPM S35VN |
| Blade Shape | Spear Point |
| Brand Name | SOG |
| Color | Blackout |
| Customer Package Type | Basic |
| Customer Reviews | 3.9 3.9 out of 5 stars (34) |
| Hand Orientation | Ambidextrous |
| Handle Material | Fiberglass |
| Included Components | Product |
| Is Product Cordless | Yes |
| Item Length | 7.52 Inches |
| Item Type Name | Holster |
| Item Weight | 11.2 ounces |
| Manufacturer | SOG Knives & Tools |
| Model Name | SOG-17-61-03-57 |
| Model Number | SOG-17-61-03-57 |
| Power Source | hand_powered |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Camping, Hunting, Fishing, Self-Defense, Whittling, Skinning, Carving |
| Reusability | Reusable |
| Special Features | Foldable |
| Style | Tactical-Modern |
| Theme | Tactical |
| UPC | 729857011525 |
| Unit Count | 1.0 Count |
| Warranty Description | 2 Year Manufacturer |
A**N
Impressive out of the box.
This is an excellent dagger and sheath design. I suspect this will be the swan song for SOG daggers, as long as GSM owns SOG. Fortunately, the Pentagon FX and FX Covert models were designed prior to GSM, and I'm glad I picked one up, since I missed out on the original Seki Pentagon's in SOG's heyday. The pentagon covert feels great in the hand with jimping in all the right places for a secure saber or icepick grip. The handle is small and not really intended for a hammer grip. The hilt is very minimal and slightly rounded, just enough to ramp your thumb against and hold your index finger secure, without being too wide or squared to catch on clothing or gear. Almost as smooth as a hiltless design. When held in a saber grip the jimping on the pommel also locks securely into the bone of your palm for thrusting motions. The same jimping on the pommel makes a secure backstop for your thumb in the ice pick grip. The sheath is equally well thought out with death grip retention and has several carry options; the pocket clip works well and holds securely to whatever you attach it to, the clip can also be removed and re-attached across the lashing holes near the hilt for scout style. You can also remove the clip for a slimmer sheath and use the lash holes with paracord to secure to your boot, ankle or use as a neck knife. You can even use Velcro tape on the smooth back of the sheath (clip removed) and attach directly to your plate carrier or any other gear with Velcro. One reviewer mentioned popping out the tabs on the inside of the sheath... DO NOT DO THIS. Those tabs pressure fit over the ends of the hilt and hold the dagger securely. Sheathing the dagger requires some force and produces an audible click when those tabs lock in place over the hilt. I suspect people are not doing this properly, hence the bad reviews regarding the sheath retention. I EDC the pentagon attached to the shoulder strap of my maxpedition sitka pack, pommel down, utilizing the stock UMS belt clip with no retention issues at all. Lastly, the only minor con that I can find is that the edges are not very sharp out of the box, as pointed out by other reviewers. The edge is serviceable and can be improved with honing, however, slicing tasks are not for dagger style blades. The design utilizes maximum tip strength for penetration tasks, and a little edge sharpness is sacrificed due to blade geometry. Out of the box, the point is sharp and well-formed for its intended use.
E**N
A good little back-up knife
Absolutely an awesome little fixed blade. Sheath holds well and the belt clip although a little thin in my opinion also works well.
C**K
Sheath Sucks!
The blade itself is amazing! Top notch from SOG.. however the sheath completely sucks! The blade will not stay securely fastened! Lot of tweaking and personal adjustments must be made !
M**R
Falls apart in 2 months, stick with Benchmade.
Extremely disappointed. I was going to buy a CRKT or finally spring for a Benchmade, had a good friend that is both an Afghan Vet and a metal smith who's opinion I really respect, on his word I gave the higher cost SOG line a try. I couldn't have made a worse choice. The blade I have had for 2 months. It is too small in my hand to start but that is my large hands, regardless tonight on my nightly after dinner walk with my wife the sheath completely came apart on my belt. I put it in my pocket, when I got home, 1 of the sets of screws that hold the Kydex sheath together is missing, I pull the blade out, remove the wrap I used to make it somewhat fit my hands and both halves of the handle around the tang just fall off. Not sure how the hell it gets tightened as the are and notch attached but this is not the quality I expected for >100. Metal quality is so so its hard to sharpen but holds an edge (anyone who knows blades knows that trade off) but if it falls apart its useless, worse dangerous. I am trained fire fighter and though not on tbe job, I bought this as my last ditch, 1 hand working need to go to blade. My state has a 4" maximum fixed blade law so this was my selection with tbe recommendation, please dont make my mistake. I am going to take it up with SOG and I will follow this up, if they make it right. If its thw typical, ship me thw goods you overpaid for and we'll get you back a replacement? Then this stays and they'll never see me again....
S**6
SOG Pentagon FX Covert
I wanted to submit this review to clear up issues people are having with the sheath. First of all, the Pentagon FX Covert is smaller in size than the Pentagon FX Professional. The Pentagon FX Covert is perfect for its purpose, it is a small and concealable last-effort knife. It was designed to fit in its sheath securely, and it does. As reviewer Arakeen stated, 'Sheathing the dagger requires some force and produces an audible click when those tabs lock in place over the hilt'. The sheath has cut-out tabs designed to tension lock the blade in place. These photos show the knife improperly and properly sheathed, and close-ups of the tension cut-out tabs.
G**1
Great Knife and Sheath
Great knife and sheath. For those saying the sheath is trash - you didn't push the knife in all the way. Once it is in all the way you will quickly see that it is VERY secure.
B**N
The sheath is crazy loose right out of the box
The blade is a bit smaller than expected but still fits a large hand okay. Very sharp on both edges. The small sheath thet comes with it is horribly loose. I will have to find something else thst SOG may have or get a custom sheath made. EDIT: There are 2 little tab just inside the sheath on either side. Using a small screwdriver, I popped those two little nubs out and the knife now fits nice and snug. My void the warranty on the sheath but at least its a snug fit now.
A**J
Quality
Quality all the way around
Trustpilot
2 days ago
1 month ago