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4.93/5 "Very good" (1400+ reviews)

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YANKEE HILL MACHINE CO., INC.
FOREARM WRENCH

100002090

Description
Ratings (12)

Heavy, steel, spanner wrench makes it easy to tighten handguard barrel nuts to the correct torque. Notched end engages the indexing ring on Yankee Hill handguards and others with similar, slotted indexing rings for aligning the accessory rails.

SPECS: Steel, black oxide finish. 8" (20.3cm) long, 2" (5.1cm) wide, ¼" (6.4mm) thick.

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Customer ratings for YANKEE HILL MACHINE CO., INC. FOREARM WRENCH

Number of ratings: 12
From brownells.com: 12
Average rating: 3.2

Not enough leverage! (26/03/2010)

No hole for breaker bar or torque wrench. Could not get some nuts off with this wrench. a Standard armorers wrench works just fine.

Works great! (29/06/2010)

It's an INSTALLATION TOOL, not a breaker bar to remove barrel nuts installed by some ham-fisted moron with Locktite. Also, it's a MUST for the jamb nut installation.

might be needed (01/07/2010)

a previous comment was that a good armorer's tool will do anything required of this 'forearm wrench'. i almost believed that comment, but i bought the wrench anyway and was mad at myself for doing so(because i have so many tools)until i went to tighten everything down. i found this wrench to be very important to me.

Fragile Junk (08/09/2010)

I barely gave this wrench a stern look and one of the pins sheared clean off. It's a piece of junk. You're better off using a standard USGI wrench or one of the encapsulating-style ones from Smith or DPMS.

Excellent for the job! (19/09/2010)

I had previously mounted a YHM FreeFloat Tube with only a strap wrench and it took forever. I bought this and it is perfect for the job!

Necessary, costs too much (03/12/2010)

This tool works perfectly if you follow the directions and use it for what it was intended. It is NOT intended to take old barrel nuts off - you need an armorer's wrench for that.

There is no way to measure torque with this wrench. YHM recommends that hand-tighten their barrel nut and then turn to the next available hole for the gas tube. If you prefer to verify a min. 35 ft# you need an armorer's wrench that allows for the attachment of a torque wrench.

This tool has one function - it is to engage the recesses in the locking collar to snug it tight. You can make other tools work, but this is the only one that works properly.

For it's very limited function it costs too much, but as with the the special wrenches for, e.g. the Daniel Defense rails (which wrenches also cost too much for what they are), you're paying for a professional install, not for the tool itself.

NO, I would not recommend it to a friend because for the cost, I'd let him borrow mine. If you can borrow it, do that.

Garbage (22/01/2011)

Used it and broke the pegs off it before accomplishing anything. Switched over to a DPMS tool and finished the job. Buy a DPMS or other quality tool instead.

This is NOT a standard tool (15/09/2011)

As remarked by another reviewer. This is designed for Yankee Hill free floats. I gave it 4 as is it not a wrench tool for ALL AR's. Also, when tightening the jam nut. Painters tape and great care must be taken to prevent marring of the jam nut. If you do a lot of Yankee Hill free floats. This is a nice tool. As an FYI. Many free floats use their own mount tools. Only Milspec original parts take generic armorer tools. When you get in to free floats or .308 caliber. They all use their own hole pattern and custom mount design. One of the nice features of many YHM free floats is the anti rotation screw models, which ensure a solid mount system for M1913 standard rail platform.

Works great to install YHM handguards (15/01/2012)

I've installed many YHM handguards without a problem, that's the only job that I use this tool for. Some of the reviewers report using this wrench for other duties and that may be the source of their disappointment. It may be possible to scratch the lock ring if used carelessly.

Pins broke too easily (15/06/2013)

Ive had this tool for 2 years and it sees light duty. Yesterday, the pins sheared off of it completely. For the price, it should've lasted more than 15 uses.

Broke the first time (24/10/2016)

Bought this as an addition to the tool box. The very first time I used it, a pin sheared off and damaged the customers barrel nut. The tool appears to be well made, and the barrel nut was not "loc-tited" in. It simply sheared off. Although I would usually blame the manufacturers, in this case i'm betting it was a random pin defect. I love Brownells guarantees, and they make the exchange easy.

<img width="500" src='/userdocs/reviewimages/e023472b-756c-4a14-9e9c-89fa416c98fe.jpg' alt=''>

Very well made (19/11/2016)

Very well made , only way to properly tighten the lock nut. Just remember not to install gas block yet , as tool is a full circle and wont fit over the gas block . Very happy with the tool.

Read 12 more ratings on brownells.com

54.9 54.9 1 GBP

Product no.: 100002090
YANKEE HILL MACHINE CO., INC. FOREARM WRENCH
Mfr Part: YHM-9621 Heavy, steel, spanner wrench makes it easy to tighten handguard barrel nuts to the correct torque. Notched end engages the indexing ring on Yankee Hill handguards and others with similar, slotted indexing rings for aligning the accessory rails.

54.9 GBP 0 £54.90 *

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

Specs: Make: AR-15

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