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Anyone who has tried to pin a gas tube into a gas block on their kitchen table knows it's not exactly a fun Saturday project. LBE Unlimited solved that headache by pre-installing the rifle length gas tube right into this low profile gas block before it ever leaves the factory. What you get is a single, ready to mount unit that drops onto your .750 barrel journal and locks down with set screws, no separate roll pin drama required.
This isn't a stamped or cast piece trying to save weight at the expense of durability. LBE machines this gas block from 4142 steel and finishes it in a black nitride coating, which gives it solid resistance to the heat cycling and carbon buildup that gas blocks deal with shot after shot. It sits low enough to clear most free float handguards, so you're not fighting for space up front if you're running a slim rail system.
The rifle length gas tube threaded through this block is made from 304 stainless seamless tubing, which holds up well against the high pressure gas cycling through it every time you pull the trigger. Since it comes pre-pinned to the block, you skip one of the more fiddly parts of an AR build and go straight to seating the block on your barrel. Just make sure your barrel is set up for a rifle length gas system, typically found on 20 inch barrels, since gas tube length isn't something you want to guess on.
Mounting is the classic two set screw approach that's been proven on countless mil-spec style builds. A drop of blue threadlocker and torquing the screws down snug against a dimpled barrel will keep this block from walking or rotating under recoil. LBE Unlimited builds this in the USA, and it's a fitting companion to their gas tubes, barrels, and other AR parts if you're piecing together a build from the ground up rather than buying it off the shelf.
Yes, the rifle length gas tube is pinned into the gas block at the factory, so it arrives as one ready to install unit. That saves you the trouble of aligning and pinning the tube yourself on the bench. You just need to slide the assembly onto your barrel and secure the set screws.
Rifle length gas systems are almost always paired with 20 inch barrels. If your barrel is a carbine, midlength, or pistol length gas system, this particular tube length won't line up correctly with your gas port. Always double check your barrel's gas system spec before ordering.
Since this is a set screw style low profile gas block, dimpling the barrel where the screws bear down is strongly recommended. Without a dimple, the screws only have flat contact with the barrel surface, which can lead to the block shifting under heat and recoil over time. A drop of blue threadlocker on the screws also helps keep everything locked in place.
Low profile gas blocks like this one are designed specifically to sit low enough to clear most free float handguard systems. It won't work with a standard front sight base or handguard that relies on a taller gas block for support. Check your handguard's inner diameter and gas block clearance specs before buying to be safe.
| UPC | 706612408035 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ARLGB-RBLK |
| Color | Black |
| Product Type | Gas Block |
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