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Benchmade Sibert 275BK Adamas

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Original price $199.75 - Original price $199.75
Original price
$199.75 - $199.75
Current price $199.75

The Adamas® folding knives come in both manual and automatic and have proven to be the strongest AXIS® knives ever made. A thick blade, liners and G10 handle scales afford the knife much of it's strength. In addition, a portion of the proceeds from these knives are donated to Three Rangers and to the Navy SEAL Foundation; both organizations benefiting the members and families of special operations. MOLLE® compatible. Made in USA. 


Designer: Shane Sibert

Mechanism: AXIS

Action: Manual-opening

Blade Steel: D2 (60-62 HRC)

Blade Length: 3.82" (9.70cm)

Blade Thickness: 0.160" (4.06mm)

Open Length: 8.70" (22.10cm)

Closed Length: 4.88" (12.40cm)

Handle Thickness: 0.73" (18.54mm)

Weight: 7.68oz. (217.72g)

Sheath Weight: 1.50oz. (42.52g)



Blade Edge Serrated

Blade Finish/Color Coated

Blade Steel D2 (60-62 HRC)

Blade Style/Shape Drop-point

Clip Type Deep-Carry, MALICE CLIP® (MOLLE Compatible)

Clip Position Reversible Tip-Up

Glass Breaker No

Handle Material Black G10

Lanyard Hole Yes

MOLLE Compatible Yes

Sheath Type Cordura

Use Tactical

Customer Reviews

Based on 4 reviews
Benchmade Adamas

Received the knife as expected, although picture shows serrations when there really aren't any in the BK model (as opposed to the SBK model). Thanks.

Good knife but not a pocket knife

I have been using and evaluating knives for 50 years. The knife is fine except that as another person pointed out, the blade tip needs to be better protected. This knife comes with a pocket clip; but, it would be better for it to have a sheath with no clip as the design invites the blade to open in a pocket. This is a serious issue. I removed the clip and made a leather holder. Be careful. if you carry this knife in a pocket. It will open. Other than that, It is a great knife.

This Knife.......

The overall action on this blade is butter. VERY smooth open, and mine came with perfect blade alignment. Over the course of the first 6 months, it was used heavily, for everything. From opening mail, packages at work, to screw driving, to limb cutting, to prying, and digging with a lot of uses probably unaccounted for. After 6 months of rugged use, the blade developed a hair of lateral movement in the frame. A quick tightening of the main torqx screw fixed that right up. At this time I went ahead and cleaned everything inside and out and re-oiled with one of our companies gun oils (Hoppe's Elite). After the tightening the blade was noticeably harder to open and did not deploy effortlessly with a quick flip any more. After the oil worked itself in, and about a week of more regular use the butter smooth opening returned.

Over all, this knife has seen a lot of work from me. It attended a defensive pistol and rifle course and did anything and everything i needed it to. The D2 Tool steel the blade is made from is TOUGH! Not the best at holding an edge, but re-sharpens effortlessly. After all, a blade this thick you can't expect to hold a razor edge, and I didn't. This is a rugged tool, meant to be used on the regular, and not babied like a fillet / cleaning knife. The G10 handle feels excellent, and is every bit as tough as the knife it self. The lock is butter to operate and it enormous. Just screams out STURDY. There is no flex at all in any direction when this is locked open. Blood grove in the blade I'm sure would come in handy to someone..... I have not been in the situation to test this out thankfully. In the end, do your self a favor and pick this knife up. Well worth it, and for sure meets and exceeds Benchmades expected quality. Sibert designed a winner here gentleman.

Perhaps this is the knife to bring to a gun backup.

The knife is definitely built to last. Came sharp out of the box but could use some fine tuning if your looking for razor sharp (maybe it was just mine?). Went from a Griptilian to this and couldn't be happier, however it may be too large for EDC for some. Bottom line, you get what you pay for and this knife was worth every penny.