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The forward assist is that button under the charging handle you tap when your bolt doesn't quite go into battery. This Luth-AR assembly is the round-style version, machined from steel and finished in black phosphate so it holds up to the same abuse as the rest of your rifle. It ships as a full set, meaning you get the assist itself, the return spring, and the roll pin needed to secure it in place.
When you press it, the pawl engages the serrations on the side of the bolt carrier group and gives the bolt that last nudge forward to lock it up. That comes in handy when the gun is running dirty, when you're chambering a round quietly, or when a little grit keeps things from seating on their own. It's a mil-spec part built for standard AR-15 uppers, so it drops into the correct machined recess without any fitting or drama.
This one is a hand-installed part for anyone comfortable with a punch and a small hammer. You'll want a 3/32-inch roll pin punch to drive the retaining pin. The trick most folks learn the hard way is to start the roll pin in the receiver first, then set the assist in place, press the plunger against the spring, and tap the pin home until it sits flush on both sides. Once it's in, push the button and make sure it springs back cleanly and catches the carrier serrations.
If you've got an upper with a broken or worn assist, or you're building from a stripped receiver, this covers you with everything in one package. Luth-AR has a solid reputation among builders for parts that show up right and work as they should, and this little assembly is no exception. Keep one in the parts bin as a spare and you'll never be stuck mid-build waiting on a tiny component to close out an otherwise finished upper.
You get the round forward assist, the return spring, and the roll pin that holds it in the receiver. That's everything needed for a complete install on a mil-spec AR-15 upper. No extra parts to hunt down separately.
Yes, the UR-08-R is built to mil-spec dimensions and drops into any standard AR-15 upper receiver machined for a forward assist. It seats in the correct recess without fitting or modification. Just note that some pistol-caliber uppers use carriers without serrations, so the assist won't engage on those.
A 3/32-inch roll pin punch and a small hammer will get the job done. Start the roll pin in the receiver first, seat the assist while pressing the plunger against the spring, then drive the pin flush. A vise block helps hold things steady while you tap.
When pressed, its pawl catches the serrations on the bolt carrier and pushes the bolt the last bit forward into battery. It's useful when the rifle is dirty, running low on lube, or when a round doesn't fully seat on its own. Think of it as a manual backup to make sure the bolt locks up.
| UPC | 859819007874 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | UR-08-R |
| Product Type | Part |
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