Free U.S. Shipping on Orders Over $150
$ 14.95
In stock – ready to ship
In stock – ready to ship
The AR-15 Aluminum Low Profile Gas Block .750 – Black is the essential foundation for any modern free-float build. If you are running a free-float M-LOK or KeyMod handguard, you need a gas block that hides completely underneath it — and this low-profile design does exactly that. No bulky A2 front sight, no interference, just a clean, streamlined fit that lets your handguard extend fully over the gas system.
Machined from lightweight 6061-T6 aluminum and finished in a durable matte black anodizing, this gas block gives you everything you need for a reliable, functional gas system at a fraction of the weight and cost of steel. The .750″ inside diameter fits the most common AR-15 barrel journal size — standard for most government, M4, and medium-profile barrels from 5.56, .223 Wylde, .300 Blackout, and many others. Whether you are building your first AR or your tenth, this is the affordable, proven solution that just works.
Designed for both direct impingement builds and budget-conscious shooters, it ensures proper gas flow to cycle your rifle reliably while keeping your front end light and slim. It is the perfect match for any free-float handguard build where weight, cost, and clean lines matter.
Light, low, reliable — and built to disappear under your handguard.
1. True Low-Profile Design for Complete Handguard Compatibility: The number one reason shooters choose a low-profile gas block is handguard clearance. This block is engineered with a compact, snag-free profile that sits just 1.2″ tall — small enough to fit under virtually all free-float handguards, even slimline 1.3″ ID rails. Unlike A2 front sight bases or bulkier steel blocks, it will not touch or interfere with your rail. The top is flat and smooth, with a small gas tube channel that centers your gas tube perfectly. The bottom is radiused to match the barrel journal for a secure, aligned fit. This means you can run a 12″, 15″, or longer handguard that covers the entire gas system for a modern, continuous top rail look and more real estate for grips, lights, and lasers. It gives your rifle that sleek, custom-built appearance while maximizing handguard space and protecting the gas system from impacts and snags.
2. Lightweight Aluminum Construction That Saves Weight Where It Counts: Weight at the front of the rifle is felt the most — every ounce matters. This gas block is machined from solid 6061-T6 aluminum, which is approximately 60% lighter than a comparable steel gas block. For a carbine or lightweight build, that weight saving improves handling, reduces fatigue, and makes the rifle faster to point and transition. The 6061-T6 aluminum is strong enough for standard gas system pressures when properly installed, and it is naturally corrosion-resistant. The matte black Type II hard-coat anodized finish protects against wear, gun oils, solvents, and carbon, while matching perfectly with your barrel and handguard. Because it sits under the handguard, it is not exposed to direct impact or extreme heat like a front sight gas block, making aluminum an ideal, weight-saving choice for this application. It is the smart choice for range guns, competition rifles, and lightweight hunting builds.
3. Precision Fit and Secure Installation for Reliable Function: This gas block is CNC-machined to exact .750″ bore dimensions with a tolerance of +/- .001″ for a snug, wobble-free fit on standard .750 journal barrels. It features dual set screws on the bottom plus a dimple-ready design — when installed on a dimpled barrel, it locks rock-solid and will not shift under recoil or heat. The set screws are hardened steel with knurled cup points that bite into the barrel for positive retention. The gas port is precisely aligned to ensure full gas flow to your gas tube, promoting reliable cycling with a wide range of ammunition. Installation is simple — slide the block over the barrel journal, align with the gas port, torque the set screws, and install your gas tube with the included roll pin hole. It fits all standard AR-15 barrels with a .750 gas block journal and works with carbine, mid-length, and rifle-length gas systems. No gunsmithing required, just basic tools.
The AR-15 Aluminum Low Profile Gas Block .750 – Black delivers reliable function, free-float compatibility, and weight savings at an unbeatable value.
Type: Low Profile Gas Block. Bore Diameter: .750″ (fits .750 journal barrels). Material: 6061-T6 Aluminum. Finish: Matte Black Type II Hard-Coat Anodized. Style: Low-Profile, Free-Float Compatible. Mounting: Dual Set Screw (Hardened Steel Cup Point). Gas System: All Lengths – Carbine, Mid, Rifle. Gas Tube Hole: .180″ with Roll Pin Retaining Hole. Height: 1.2″ Low Profile. Weight: ∼1.1 oz Aluminum. Features: Lightweight, Corrosion-Resistant, Free-Float Handguard Ready.
Reviews
There are no reviews yet.