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A bolt that hiccups on extraction or fails the old stand-up test doesn't mean your rifle is done. It usually means a few small internal parts have worn out, and those are exactly the pieces this kit covers. The Luth-AR AR-BCK Bolt Component Kit gathers the usual suspects into one package so you can refresh a .223/5.56 bolt without hunting down parts one at a time or waiting on three separate orders to show up.
Inside the pouch you get a BT-06 ejector, LR-26 ejector spring, and BT-04 ejector pin, plus a BT-07 extractor, BT-08 extractor spring, BT-03 extractor pin, and a BT-08-OR extractor O-ring for stronger case grip. Rounding it out is a 3-pack of gas rings, a BT-14 firing pin, and a BT-16 firing pin retainer. These are the components that actually control ignition, extraction, and ejection, so replacing them as a set gets your bolt back to consistent, dependable cycling.
Extractor springs and gas rings are common wear items on any AR-15 that sees regular range time, and most armorers swap them somewhere in the 3,000 to 5,000 round range before they cause trouble. The gas rings help the bolt unlock during the cycle, and a worn set is easy to spot with the classic bolt stand-up check. Having a fresh extractor spring on hand solves a lot of nagging extraction gremlins before they turn into a bad day.
Even if your rifle runs fine today, this kit is a smart thing to keep in the range bag or on the bench. It's the same collection of small parts that always seem to walk off or wear out at the worst time, and having them ready means a quick fix instead of a shelved rifle. Installation is straightforward for anyone comfortable pulling apart a bolt carrier group, needing only basic tools and a punch. Made in America by Luth-AR, a company that has built its name on quality AR components.
Yes, it's built for standard mil-spec AR-15 bolts chambered in .223/5.56. The parts are made to proper tolerances and drop in without fitting, so as long as you have a standard bolt carrier group, these components will work. It's a straightforward replacement rather than a custom fit job.
Most people swap extractor springs and gas rings somewhere between 3,000 and 5,000 rounds, or sooner if you notice extraction issues or the bolt fails the stand-up test. A quick check during your normal cleaning routine will tell you when it's time. Keeping a kit like this on hand means you're ready the moment something starts acting up.
It does. The AR-BCK comes with a full-spec BT-14 firing pin and a BT-16 firing pin retainer, so you don't have to source those separately. That makes it a more complete refresh than kits that only cover the extractor and gas rings.
If you're comfortable disassembling a bolt carrier group, yes. The parts are designed for easy installation and mostly require a punch and basic hand tools. Anyone who has cleaned and taken apart their own bolt should be able to handle it, and there are plenty of walkthrough videos if you want a visual reference.
| UPC | 812058031635 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AR-BCK |
| Product Type | Bolt Carrier Group Part |
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