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CMMG
The CMMG Bolt Rehab Kit for AR-15 is a complete maintenance and repair solution for shooters who want to service their own bolts. Whether you're doing a deep clean after a long range session, diagnosing feeding issues, or refurbishing a used bolt carrier, this kit contains everything you need to disassemble, inspect, and reassemble an AR-15 bolt without hunting down parts individually. Built by CMMG—a manufacturer known for precision AR components—this caliber-specific kit takes the guesswork (and the parts-hunting headache) out of bolt maintenance.
AR-15 bolt problems often trace back to wear in the same few components: a tired ejector, a weak extractor spring, or gas rings that have seen better days. This kit addresses all of those wear items in one package. You get the ejector and its detent spring, a fresh extractor with its spring and pin, the o-ring that seals the extractor, three replacement gas rings, and the ejector roll pin. If you shoot suppressed, run a high round count, or just want to keep a spare bolt in working order, having these parts on hand means you can get back in the fight instead of waiting on a gunsmith or mail order.
The kit is straightforward to use if you're comfortable with basic AR armorer work—no special tools required for most of it. Each component is sized and specced for AR-15 platforms, so compatibility is plug-and-play as long as your rifle is standard spec. CMMG also produces caliber-specific versions for .308, 9mm, and .22 LR AR platforms, sold separately, so you can build a toolkit that covers your whole safe.
| Brand | CMMG |
| Platform | AR-15 |
| Kit Type | Bolt maintenance and repair |
| Included Components | Ejector, ejector/selector detent spring, extractor, extractor spring, extractor pin, ejector roll pin, 3 gas rings, extractor spring o-ring, buffer |
| Application | Bolt carrier group service and refurbishment |
The kit contains an ejector and its detent spring, an extractor with spring and pin, an extractor o-ring, three gas rings, an ejector roll pin, and a buffer. These are the wear items most commonly replaced during bolt maintenance and repair.
Yes, the kit is designed for standard AR-15 platforms. If your rifle uses a proprietary or non-standard bolt carrier, verify compatibility before ordering.
Basic AR armorer knowledge is helpful, but no special tools are required for installation of these components. If you've disassembled a bolt carrier before, you'll find the process straightforward.
Yes—CMMG produces separate Bolt Rehab Kits for .308 AR platforms, 9mm AR builds, and .22 LR rifles, each sold individually.
CMMG
The CMMG Bolt Rehab Kit for AR-15 is a complete maintenance and repair solution for shooters who want to service their own bolts. Whether you're doing a deep clean after a long range session, diagnosing feeding issues, or refurbishing a used bolt carrier, this kit contains everything you need to disassemble, inspect, and reassemble an AR-15 bolt without hunting down parts individually. Built by CMMG—a manufacturer known for precision AR components—this caliber-specific kit takes the guesswork (and the parts-hunting headache) out of bolt maintenance.
AR-15 bolt problems often trace back to wear in the same few components: a tired ejector, a weak extractor spring, or gas rings that have seen better days. This kit addresses all of those wear items in one package. You get the ejector and its detent spring, a fresh extractor with its spring and pin, the o-ring that seals the extractor, three replacement gas rings, and the ejector roll pin. If you shoot suppressed, run a high round count, or just want to keep a spare bolt in working order, having these parts on hand means you can get back in the fight instead of waiting on a gunsmith or mail order.
The kit is straightforward to use if you're comfortable with basic AR armorer work—no special tools required for most of it. Each component is sized and specced for AR-15 platforms, so compatibility is plug-and-play as long as your rifle is standard spec. CMMG also produces caliber-specific versions for .308, 9mm, and .22 LR AR platforms, sold separately, so you can build a toolkit that covers your whole safe.
| Brand | CMMG |
| Platform | AR-15 |
| Kit Type | Bolt maintenance and repair |
| Included Components | Ejector, ejector/selector detent spring, extractor, extractor spring, extractor pin, ejector roll pin, 3 gas rings, extractor spring o-ring, buffer |
| Application | Bolt carrier group service and refurbishment |
The kit contains an ejector and its detent spring, an extractor with spring and pin, an extractor o-ring, three gas rings, an ejector roll pin, and a buffer. These are the wear items most commonly replaced during bolt maintenance and repair.
Yes, the kit is designed for standard AR-15 platforms. If your rifle uses a proprietary or non-standard bolt carrier, verify compatibility before ordering.
Basic AR armorer knowledge is helpful, but no special tools are required for installation of these components. If you've disassembled a bolt carrier before, you'll find the process straightforward.
Yes—CMMG produces separate Bolt Rehab Kits for .308 AR platforms, 9mm AR builds, and .22 LR rifles, each sold individually.
