RTB Dedicated .22LR Conversion Kit - 9" Barrel | Stainless Steel Bolt Group | Charging Handle | Magazine 25 or 10 Round Options
Convert your AR-15 into a dedicated .22LR rifle with the RTB Dedicated .22LR Conversion Kit, designed for serious shooters who want to train more and spend less. This complete .22LR upper conversion kit includes everything you need to transform your standard mil-spec AR-15 into a reliable rimfire platform: an RTB stainless steel .22LR bolt carrier group, anti-jam .22LR charging handle, 9" medium-profile barrel, and your choice of RTB 10-round or 25-round magazine. Perfect for plinking, training, and recoil-sensitive shooters, this kit delivers affordable trigger time without sacrificing performance or compatibility. Works seamlessly with any standard AR-15 lower.
Kit Includes:
RTB .22LR Bolt Group:Engineered for dedicated .22LR builds, this stainless steel bolt group is tuned for optimal cycling and long-term durability. Built to RTB specs and function-tested for performance with RTB .22LR barrels.
RTB .22LR Anti-Jam Charging Handle:
This reinforced .22LR charging handle features an enclosed track to prevent spent casings from getting caught between the handle and bolt—an upgrade over standard AR-15 handles.
25 or 10 Round .22LR Magazine:
Classic black polymer, mil-spec lower compatible, 10 or 25 round capacity
RTB 9" .22LR Barrel – Medium Profile:
Constructed from 4150 CMV steel with a salt bath nitride finish, this 9" barrel features a 1:16 twist rate and 1/2x28 threads for use with common muzzle devices. Perfect balance of durability and accuracy for compact dedicated rimfire builds.
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Barrel
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Specifications
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| Caliber | 22LR |
| Length | 9" |
| Material | 4150 Chrome Moly Vanadium |
| Profile | Medium Taper |
| Finish | SBN |
| Dimpled? | No |
| Twist Rate | 1:16 |
| Muzzle Thread | 1/2x28 TPI |
| Weight | 16.8 oz |
AMMO RECOMMENDATION: For in-house testing, we utilize CCI .22LR Mini-Mag 36 Grain Copper-Plated Hollow Point Varmint Ammo (1,260 FPS). We highly recommend this ammunition for use with all RTB .22 barrels. It is important to note that the use of underpowered or economy-grade ammunition may lead to less-than-optimal performance outcomes.
