Yankee Hill Machine SLR .300 BLK | Gun Review

Unleash 300 Blackout firepower with this reliable slim, light, railed rifle!

Gun Details
YHM’s newest forend design is the SLR (Slim, Light, Railed). It is available in several lengths and two primary configurations: railed and smooth. Quad-railed versions remain narrow and lightweight, with built-in rails at 3, 6, 9 and 12 o’clock positions. Smooth models have a fixed top rail with rail attachment points along the other three positions. Rails can be attached as desired in various lengths. Customizable handguards are fast becoming the norm—most have no need for all the rail space a qual-rail affords. Smooth handguards are more comfortable and ultimately slimmer and lighter. Both SLR styles accommodate piston and direct impingement systems. Attachment requires no extra tools, and the barrel remains free floated. Hardcoat anodized, the SLRs have a really clean look and remain very comfortable to grasp.

SLR rifles will be equipped with this forend, along with other quality YHM parts. The rifle I was sent for testing was chambered in 300 AAC Blackout, or 300 BLK. Quickly becoming a favorite for duty use, this caliber is growing more popular every day. The SLR starts with the company’s YHM-15 lower receiver. Forged from 7075-T6 aluminum, it’s machined in-house, and features an enlarged magazine well and will accept any mil-spec parts. My test rifle’s lower receiver internals were all standard-issue, with the exception of the EZ Pull takedown pin set. Larger knobs allow you to pull the pins out without a tool or bullet. Rounding out the lower receiver were an A2-style pistol grip and a six-position collapsible stock.

Marked “300 BLK,” the forged upper receiver is hardcoat anodized and mated perfectly with the lower receiver. The bolt group and charging handle are standard issue. The barrel is chrome-lined and fluted with an elongated diamond pattern. The rifle has M4 feed ramps for greater reliability, and the 16-inch barrel features a 1-in-8-inch twist rate as well as 1/2-36 threading, which allows for the use of YHM muzzle devices. A quick-disconnect (QD) Phantom flash suppressor tops off the barrel. YHM also shipped my test rifle with both front and rear flip-up QDS sights (comes standard). These sights are very low profile, allowing for scopes or red dots to be attached easily.

The 300 BLK cartridge is one of the easiest to suppress, and that’s what it was created for. In a rifle with a quality suppressor, it is efficient, quiet and does not suffer many of the reliability issues seen by some suppressed 5.56mm rifles. For testing, YHM supplied its new .30-caliber Phantom LT suppressor to complete the package. Weighing in at just 20 ounces, its stainless steel and Inconel construction keep it strong. With a retail price of only $789, it remains one of the most affordable on the market. And, getting it in .30 caliber allows it to be used on several rifles, adding to its versatility.

To evaluate the rifle’s handling, I mounted an EOTech EXPS3-2 holographic sight. To reach out to longer distances, I used EOTech’s G33.STS 3X magnifier with the EXPS3-2. For accuracy testing and shooting groups, I attached a Leupold 3-18x44mm Mark 6 scope.

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