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Faxon's Low Profile .750 Gas Block is one of those parts you install once and then forget about, which is exactly what you want from a gas block. It clamps onto any AR-15 barrel with a standard .750 inch gas journal and rides low enough to slip under just about any free-float handguard on the market. The body is machined from high-strength steel and finished in nitride for corrosion resistance and a clean black look that matches Faxon barrels and most other rails out there.
Most low profile blocks get by with two set screws. Faxon adds a third. That extra screw gives you more clamping force and a lower chance of the block creeping forward under sustained fire or hard recoil, which is why a lot of builders skip dimpling or pinning altogether and just run this with a good thread locker. The block is drilled through the middle of the profile to keep the weight down, coming in right around an ounce, so it's a friendly choice for lightweight builds where every bit up front counts.
Installation is straightforward with an Allen key on the three set screws underneath. Faxon recommends a thread-locking compound rated for high heat, since gas blocks run hot in normal use. Line up the block so the gas port matches your barrel's port, snug the screws in an even pattern, and you're set. It works with any gas system length, so whether you're running pistol, carbine, mid, or rifle length, this block does its job as long as your gas tube matches your setup.
Worth noting up front: the gas tube roll pin is not included, since Faxon ships those with their gas tubes. Grab a matching gas tube and roll pin if you're building the system from scratch. Everything is backed by the Faxon Lifetime Guarantee against defects in materials and workmanship.
It fits any AR-15 barrel with a standard .750 inch gas journal, which is the most common size on medium-profile .223 and 5.56 barrels. Just confirm your barrel's gas journal measures right around .750 inches before ordering. If your barrel is a lighter pencil profile with a .625 journal, you'll want the smaller version instead.
No, the gas tube and its roll pin are not included with this block. Faxon ships roll pins packaged with their gas tubes, so you'll want to pick up a gas tube in your correct system length to complete the build. Match the tube to your setup, whether that's pistol, carbine, mid, or rifle length.
Not necessarily. The third set screw adds extra clamping force over a typical two-screw design, and many builders run it with a heat-rated thread locker and skip pinning or dimpling. If you want maximum security on a hard-use rifle, dimpling is still an option, but it isn't required for reliable function.
Yes, its ultra-low profile is designed to tuck under free-float and drop-in handguards without clearance issues. That's the whole point of a low profile block compared to a taller fixed front sight base. As long as you're running a standard free-float rail, it should clear with room to spare.
| UPC | 816341020986 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GBLP7503 |
| Color | .750 DIAMETER LOW PROFILE |
| Length | 6.4000 |
| Model | |
| Product Type | Gas Block |
| Style | Low Profile |
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