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Reviews & Ratings for Yankee Hill Machine Specter Length Diamond Forearm AR-15 YHM-9637-DX — 12 reviews

(12 reviews)
Yankee Hill Machine Specter Length Diamond Forearm AR-15 YHM-9637-DX
Yankee Hill Machine Specter Length Diamond Forearm AR-15 YHM-9637-DX
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Most Helpful Positive Review Perfect addition
This quad rail is an amazing addition to any AR15. Quality build product with a simple straight forward installation. The only complaint I have is there's no tool included to help tighten the jam nut. The barrel nut is installed with a normal AR15 D-ring tool. I used the PRI barrel nut tool for my removal of the stock barrel nut and install of this handguard barrel nut. Went on without any issues and was easy to line up properly. This specter length handguard comes right to the end of a 10.5" barrel while leaving perfect room to properly install a muzzle device.
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It's a good addition.

by Wham, from SC, United States Written on June 23, 2020
Does what it was made to do. Mount a vertical grip you have outstanding control of the weapon. No pressure on barrel, extra area for other useful items. I have had good luck using YHM products. At least 200 builds rifle and carbine.
Pros:
  • Very versatile.
Cons:
  • Sharp edges needs plastic covers.
Would recommend: Yes
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Yankee Hill Machine Diamond Forearm

by Ambush at the Crossroads, from NC, United States Written on October 29, 2018
This hand guard was ordered to be used with the Dolos. It is a Yankee Hill quality item. You will not be able to use the two Yankee Hill barrel nut screws (and are not required to), with the Dolos unless you cut off the end of the screws. Or, leave the mounting holes open. I used my Dremel tool and it was easy enough. There are no short screws that can be purchased for this application. I’m very pleased with this hand guard.
Pros:
  • Price
  • Quality
  • Appearance
  • Yankee Hill Customer support
Cons:
  • None
Best Used for:
  • As it is intended
Would recommend: Yes
Was it helpful to you? Yes | No
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Solid product

by Steven Bicigo, Verified Owner from MI, United States Written on May 20, 2018
Works well with my billet side charging upper. Recommend having tool to align top rail because of the lack of anti rotation tabs. I needed a rail without the anti rotation tabs to work with my billet side charging upper on my quarter circle ten .45 acp build. Works well solid product
Would recommend: Yes
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Specter length Diamond rail

by Cawakening, from WA, United States Written on March 14, 2018
Great rail even though it isn't mill spec. A little dated design but a great rail. The barrel nut seems to thread on in Anderson upper better than it did in the aero Percision for some reason. With it not being milspec you need to take an optic mount and Clampett on where your receiver meets the rail and tighten it down to make sure everything is straight I carry handle may not work since it's not truly milspec .
Pros:
  • Affordable
Cons:
  • Packaging method
Best Used for:
  • A build where you want heft and rigidity
Would recommend: Yes
0 of 1 found the following review helpful.
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So far Great!

by Sean, from ME, United States Written on December 23, 2017
Make sure you have an armorers wrench for install. Other than that it’s great easy to put on and attachments fit great! First time using the AR and the barrel was smoking thru the diamonds! Front flip up sight on top and vertical grip on bottom. Tac light is on he way
Pros:
  • Attachments fit great
Cons:
  • Need Armorers wrench
Best Used for:
  • AR
Would recommend: Yes
Was it helpful to you? Yes | No
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YHM Diamond Edition Hand Guard

by TopGun0814, from FL, United States Written on November 7, 2017
I was shopping around for this hand guard for quite a while. It’s very unique definition caught my attention. After a few days of looking around o notice OpticsPlanet had it at the best price. Not only did I get it for the price I wanted, a few days down the line the price dropped and they made a price adjustment. Great service! Highly recommend them
Would recommend: Yes
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Excellent Product by YHM

by Dalton Eberhardt, Verified Owner from KS, United States Written on February 10, 2017
I had my eye on this product for about a week or so and really wanted it. The price dropped $30 on it and OpticsPlanet had a free 2-day shipping coupon so I had to buy one. When it arrived I immediately put it on, if you have all the necessary parts and knowledge it won't take more than 15 minutes. This free float handguard is very aggressive looking and made my Anderson AR15 much cooler, I highly recommend this
Pros:
  • Sturdy
  • Cost and quality
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Free Floating

by mclark, Verified Owner from IA, United States Written on February 9, 2016
I purchased this forearm for my 16" standard (not bull) barrel AR15. This forearm is very well made and worth the money. I've owned one of the cheaper ones and they don't last and are soft metal. All parts are not created equal. This one is worth a look. You will need a low profile gas block since this will extend out past the gas block and I would recommend the YHM-9484A end cap. It finishes the look of the forearm and looks really good, plus it will keep large debris out. Both install pretty easy and then you have a free floating barrel. I would definitely recommend this product.
Pros:
  • well built, solid construction
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Great fit!!

by JJFranco, Verified Owner from OH, United States Written on July 28, 2015
Used with a YHM low profile gas block, perfect fit!! Solid and very sturdy. Excellent continuity ofbthe flat top on the upper. Best installed with their propietary locking nut tool, I have 3 rifles with these free float tubes.
Would recommend: Yes
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Better than the best!

by Al Heffe, Verified Owner from NC, United States Written on July 26, 2015
Bought one. Then bought another and another and yet, another. Have purchased two rifle length forearms, one spectre length, and one pistol length. Very rigid. I used a PRI barrel wrench (PRI #: 05-0082) and a 1/2 breaker bar to tighten per instructions. Used low profile gas blocks. The rail and upper then go into a jig to ensure alignment then I insert the anti rotations screws. Tighten the jam nut with a flat blade screwdriver and a light tap with a ball peen hammer. Fool proof. Exacting. Finish it out with the YHM end cap and some MAGPUL treatments. Buy it and be happy.
Would recommend: Yes
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