How to Build a Custom 10/22® Rifle using the Faxon FF-22 Receiver Kit

Posted by Faxon Firearms Staff on Aug 10th 2026

How to Build a Custom 10/22® Rifle using the Faxon FF-22 Receiver Kit

The Ruger 10/22 is one of the most customizable rifles ever made. The Faxon FF-22 Receiver Kit, Rimfire barrel lineup, and FF-22 Bolt Assembly give you everything you need to build one from the ground up — or upgrade an existing gun with billet-quality components. Here's how the pieces fit together, what separates our Plinker Series from our Match Series barrels, and how to choose the right chamber and ammunition for the way you shoot.

The Ruger® 10/22 has been in production since 1964, and the aftermarket that has grown around it is enormous. Stocks, triggers, barrels, bolt assemblies, chassis systems, and suppressors are all available from dozens of manufacturers. But the foundation of every 10/22 build is the receiver — and the receiver you start with determines the tolerances, fit, and accuracy ceiling of the finished rifle.

Faxon's FF-22 Receiver Kit was designed to raise that ceiling. It's a billet-machined 6061-T6 aluminum receiver with an integrated 0-MOA Picatinny rail, a chromoly steel V-block, and a rubber bolt buffer. Pair it with a Faxon Rimfire barrel and the FF-22 Bolt Assembly, and you have a complete Faxon-built action ready for whatever trigger and stock you prefer.

This article walks through each component, explains the difference between our Plinker Series and Match Series barrels (and the two different chambers they use), and helps you pick the right ammunition for your setup.

The FF-22 Receiver Kit

SKU: FF-22-Receiver-01  |  Price: $185  |  Shop the FF-22 Receiver Kit →

The FF-22 is a serialized firearm (it must ship to an FFL dealer), CNC-machined from a solid billet of 6061-T6 aluminum and finished in black hardcoat anodize. Unlike the factory Ruger 10/22 receiver, which has historically used investment casting or stamped construction depending on the model year, the FF-22 is machined across three operations with in-process inspections verified by Go/No-Go gages and CMM.

What's in the box

The kit includes the receiver, a chromoly steel V-block with two #12-24 screws, and a rubber bolt buffer. The V-block secures the barrel to the receiver in the standard 10/22 configuration, and the bolt buffer cushions bolt cycling for reduced wear and quieter operation. To complete a rifle, you still need a barrel, bolt assembly, trigger group, charging handle, and stock or chassis.

Integrated Picatinny rail

The receiver top features a 0-MOA Picatinny rail machined directly into the aluminum. It is longer than the factory 10/22 rail, which gives you more flexibility when mounting scopes, red dots, or other optics. No separate scope base or adapter is needed.

Tight barrel channel and thermal fitting

The barrel channel is machined to a tight tolerance (0.687 inches, +0.002/-0.000) to prevent barrel droop — a well-known accuracy issue on the 10/22 platform where a loose barrel-to-receiver fit allows the barrel to sag under its own weight. Because of this intentionally tight fit, some barrels may require a thermal fit for installation: heat the front ring of the receiver with a heat gun or hair dryer for 30–60 seconds, slide the barrel shank in, and let the receiver cool. It contracts around the barrel for a concentric, play-free fit. This is normal and by design.

Compatibility

The FF-22 is a drop-in replacement for any standard (non-takedown) Ruger 10/22 receiver. It accepts all Ruger 10/22 OEM non-takedown components — bolt assemblies, trigger groups, charging handles, barrels, and stocks — as well as all Faxon Rimfire barrels and most aftermarket 10/22 parts built to the non-takedown spec. It is not compatible with Ruger 10/22 Takedown models.

The FF-22 Bolt Assembly

SKU: FF-22-Bolt-01  |  Price: $135  |  Shop the FF-22 Bolt Assembly →

The Faxon FF-22 Bolt Assembly is machined from 17-4 PH stainless steel, heat-treated to H900 condition (HRC 40–47), and finished in black nitride (QPQ). It includes a hardened round-profile firing pin and a sharp extractor. It weighs 0.39 pounds.

The round firing pin design provides consistent, reliable ignition across different brands of .22 LR ammunition. The bolt is a drop-in replacement for Ruger 10/22 OEM bolts and is the natural companion to the FF-22 receiver, though it works in any standard non-takedown 10/22 receiver.

Faxon Rimfire Barrels: Plinker Series vs. Match Series

This is where the build decision gets interesting. Faxon offers two lines of 10/22 barrels, and the most important difference between them isn't the profile or the length — it's the chamber.

All Faxon Rimfire barrels share a common platform: 416-R stainless steel, 6-groove rifling, 1:16 twist rate, recessed target crown, salt bath nitride finish, and 1/2x28 muzzle threads for suppressor compatibility. They are all magnetic particle inspected. The difference is that Plinker Series barrels use a Sporter chamber and Match Series barrels use a Bentz chamber.

Understanding what that means will help you pick the right barrel — and the right ammunition — for your build.

Sporter Chamber vs. Bentz Chamber: What's the Difference?

The .22 LR cartridge has three commonly used chamber specifications: SAAMI Sporting, SAAMI Match, and the Bentz chamber (named after competitive shooter Fred Bentz). Each one has different internal dimensions — specifically, differences in throat length, throat diameter, and freebore — that affect how the bullet engages the rifling when the round is chambered.

The Sporter chamber (Plinker Series)

The SAAMI Sporting chamber is the most generous of the three. It has a longer throat and slightly wider dimensions at the base of the cartridge. This means the bullet has more room to align with the bore before it contacts the rifling lands.

The practical result is near-universal ammunition compatibility. A sporter chamber will reliably feed, fire, and extract virtually any .22 LR ammunition on the market — bulk packs, high-velocity hunting loads, standard velocity target ammo, subsonic rounds, and everything in between. It is the chamber you want if you plan to run whatever is on the shelf at your local shop, shoot high volumes for plinking or training, or run a suppressor with subsonic ammo where you want reliability above all else.

The Bentz chamber (Match Series)

The Bentz chamber was designed specifically for semi-automatic .22 LR rifles. It sits between the SAAMI Sporting chamber and the SAAMI Match chamber in terms of internal dimensions. The throat is shorter and tighter than a sporter chamber, which means the bullet engages the rifling sooner and with less room to yaw before it enters the bore.

The practical result is tighter bullet-to-bore alignment, which can translate to improved accuracy potential — provided you feed it ammunition that was manufactured to the tighter tolerances the chamber expects. A true SAAMI Match chamber is even tighter, but it tends to cause feeding and extraction issues in semi-automatic actions because the cartridge dimensions are so restrictive. The Bentz chamber was the solution: it captures most of the accuracy benefit of a match chamber while still functioning reliably in a blowback semi-auto like the 10/22 — as long as you use quality, consistently manufactured ammunition.

The tradeoff

The sporter chamber is forgiving. The Bentz chamber is precise. You gain accuracy potential with the Bentz, but you narrow the range of ammunition that will run well in the gun. Bulk-pack .22 LR with inconsistent dimensions can cause feeding issues, misfires, or bullet deformation in a Bentz chamber — not because the chamber is defective, but because it was designed to hold the bullet to a tighter standard than cheap ammunition can meet.

Which Ammunition Should You Use?

For Plinker Series barrels (Sporter chamber) — run anything

The sporter chamber is designed to eat whatever you put through it. Good options across a wide range of use cases:

  • Bulk plinking / training: CCI Mini-Mag, Federal AutoMatch, Remington Thunderbolt, Winchester 333/555, Aguila Super Extra
  • Suppressed use: CCI Quiet-22, CCI Standard Velocity, Aguila Colibri/Super Colibri
  • Target / small game: CCI Standard Velocity, Federal Champion, Norma TAC-22

You don't need to be selective. That's the point of the sporter chamber.

For Match Series barrels (Bentz chamber) — use quality, consistent ammunition

The Bentz chamber rewards ammunition that is manufactured to tight dimensional tolerances. Standard-velocity and match-grade loads are ideal:

  • Match / competition: Eley Tenex, Eley Match, Lapua Center-X, Lapua Midas+, SK Rifle Match
  • High-quality target: CCI Standard Velocity, SK Standard Plus, Federal Gold Medal Target, Norma Match-22
  • Reliable high-velocity: CCI Mini-Mag (well-made and dimensionally consistent, runs fine in Bentz chambers)

Avoid bulk-pack ammo with inconsistent case dimensions. Rounds that are slightly oversized at the case head or have rough/uneven wax coatings can jam, fail to extract, or scrape the bullet on entry — hurting the accuracy the Bentz chamber was designed to deliver.

Plinker Series Barrel Options

All Plinker Series barrels use the Sporter chamber, 416-R stainless steel, 1:16 twist, 6-groove rifling, recessed target crown, salt bath nitride finish, and 1/2x28 threads. Available in 10.5-inch and 16-inch lengths.

Profile Length Diameter Price Link
Flame Fluted® Bull 16" .920" $224 Shop →
Heavy Fluted Bull 16" .920" $220 Shop →
Flame Fluted® 16" Medium $190 Shop →
Straight Fluted 16" Medium $189 Shop →
Pencil Profile 16" Pencil $187 Shop →
Straight Fluted 10.5" Medium $183 Shop →

The bull barrel profiles (.920" diameter) add mass for heat stability and reduced recoil, making them ideal for bench shooting, steel challenge, and suppressed builds where the extra weight is welcome. The medium and pencil profiles prioritize handling and weight savings — good for field use, action shooting, and builds where you want a nimble rifle.

Faxon's Flame Fluted® pattern is a patented aesthetic and weight-reduction feature that removes material in a helical pattern along the barrel exterior without compromising rigidity.

Match Series Barrel Options

All Match Series barrels use the Bentz chamber, 416-R stainless steel, 1:16 twist, 6-groove rifling, recessed target crown, salt bath nitride finish, and 1/2x28 threads. Available in 18.5-inch length only.

Profile Length Diameter Price Link
Flame Fluted® Heavy/Bull 18.5" .920" $258 Shop →
Flame Fluted® Medium 18.5" Medium $252 Shop →

The longer 18.5-inch length provides a slight velocity increase over 16-inch barrels and additional sight radius for iron-sight shooting. Combined with the Bentz chamber and quality match ammunition, these barrels are built for shooters chasing the tightest groups the 10/22 platform can produce — bench rest competition, rimfire precision series, and NRL22.

Suppress It: The Twenty-Toucan®

SKU: FF-SIL-RF-MOD-22-01  |  Price: $400  |  Shop the Twenty-Toucan® →

Every Faxon Rimfire barrel ships with 1/2x28 muzzle threads, and there is a reason for that — the 10/22 is one of the best suppressor hosts on the market. If you are building a suppressed .22 LR rifle, Faxon makes a suppressor purpose-built for the platform.

The Twenty-Toucan® is a modular, fully serviceable suppressor machined from 17-4 PH stainless steel with a black nitride finish. It ships with two configurations from a single serialized can: short mode (3.87 inches, 5.1 oz) for pistols and compact builds, and full mode (5.78 inches, 8 oz) for maximum suppression on rifles. Full configuration delivers up to 28.8 dB of reduction on a 16-inch semi-auto rifle — quiet enough that the mechanical action of the bolt cycling is louder than the report.

Why it pairs well with the FF-22 platform

The Twenty-Toucan includes six tunable baffles — three standard and three perforated — that you can mix, match, and reorder to change the suppressor's tone, flash signature, and backpressure. For a 10/22 build, this matters. The 10/22 is a simple blowback action, so backpressure from the suppressor directly affects how hard the bolt cycles. Running perforated baffles near the breech end vents gas earlier in the stack, reducing backpressure and blowback into the action. If your build is over-gassed when suppressed (common with blowback .22s), you can tune the baffle stack to manage it instead of modifying the gun.

The can is also fully serviceable. Rimfire ammunition is inherently dirty — lead, wax, and carbon fouling accumulate fast. The Twenty-Toucan disassembles completely for individual baffle cleaning every 300–500 rounds. Standard firearm solvent, brushes, or ultrasonic cleaning all work.

Not just rimfire

The Twenty-Toucan is full-auto rated for .17 HMR, .22 LR, .22 Mag, and 5.7x28mm. The 17-4 PH stainless construction handles the higher pressures of .22 Mag and 5.7x28mm that would compromise lighter aluminum or titanium rimfire-only cans. One NFA item covers your 10/22, your .22 pistol, and your 5.7 PDW.

Silencer Summit tested

The Twenty-Toucan was independently tested at the 2025 Thunderbeast Silencer Summit alongside 27 other .22 suppressors under standardized conditions. It recorded 131.95 dB at muzzle left (27.7 dB reduction) and 133.06 dB at the shooter's ear (20.4 dB reduction) — hearing-safe at every measurement position.

Note: the $200 NFA tax stamp fee has been eliminated. You still need an ATF eForm 4 through a licensed dealer, but current processing times are significantly faster than they were a few years ago.

Putting It All Together: Sample Builds

The "Do-Everything" Plinker Build

For a general-purpose .22 LR rifle that handles plinking, training, small game, steel challenge, and suppressed shooting without being picky about ammo:

Total Faxon components: $510. Add your preferred trigger and stock to complete the build. Feed it whatever .22 LR you can find.

The Precision / Competition Build

For rimfire benchrest, NRL22, or any discipline where accuracy is the priority and you're willing to run match-grade ammo:

Total Faxon components: $578. Pair with CCI Standard Velocity, SK Rifle Match, or Eley Tenex for best results.

The Suppressed Build

For a quiet, all-Faxon .22 LR rifle optimized for backyard shooting, pest control, or just the satisfaction of a hearing-safe rimfire:

Total Faxon components: $909. The sporter chamber keeps the gun reliable with subsonic and standard velocity ammo — exactly what you want when running suppressed. Use the Twenty-Toucan's tunable baffle stack to dial in backpressure for your setup.

Frequently Asked Questions

Is the FF-22 Receiver Kit a firearm? Yes. The receiver is the serialized, regulated component of the 10/22 platform. It must be shipped to a licensed Federal Firearms Licensee (FFL) dealer, and you will complete a Form 4473 to take possession.

Can I use my existing 10/22 parts on the FF-22? Yes — if your current rifle is a standard (non-takedown) Ruger 10/22, you can move your bolt, barrel, trigger group, charging handle, and stock directly onto the FF-22 receiver. The V-block and bolt buffer are included.

What is a thermal fit, and is it normal? The FF-22's barrel channel is intentionally tight to prevent barrel droop. If your barrel doesn't slide in by hand, heat the front ring of the receiver with a heat gun for 30–60 seconds and slide the barrel in. Once the receiver cools, it contracts around the barrel for a secure, concentric fit. This is normal and by design.

Can I use bulk .22 LR in a Bentz chamber? You can try, but results will vary. Bulk ammunition with inconsistent case dimensions may cause feeding problems or reduced accuracy in a Bentz-chambered barrel. The Bentz chamber was designed for ammunition manufactured to tighter standards. If you want to run any ammo without worrying about it, choose a Plinker Series barrel with the sporter chamber instead.

What's the difference between the Faxon bolt and the Ruger OEM bolt? The Faxon FF-22 Bolt Assembly is machined from 17-4 PH stainless steel (vs. the OEM cast construction), features a round-profile hardened firing pin for consistent ignition, a sharp extractor, and a black nitride (QPQ) finish. It is a direct drop-in for the FF-22 receiver or any standard 10/22 receiver.

Are Faxon Rimfire barrels threaded for suppressors? Yes. All Faxon Rimfire barrels (both Plinker and Match Series) come with 1/2x28 muzzle threads, which is the standard thread pattern for .22 LR suppressors. The Faxon Twenty-Toucan® ($400) is a modular, fully serviceable .22 suppressor that mounts directly via 1/2x28 and delivers up to 28.8 dB of reduction on a 16-inch semi-auto rifle.

Does the Twenty-Toucan® work on a 10/22? Yes. The Twenty-Toucan threads directly onto any Faxon Rimfire barrel (or any 10/22 barrel with 1/2x28 threads). It includes six tunable baffles — three standard and three perforated — so you can adjust backpressure and tone to match the 10/22's blowback action. It is full-auto rated for .22 LR, .22 Mag, .17 HMR, and 5.7x28mm.

Does the FF-22 work with 10/22 Takedown models? No. The FF-22 is compatible with standard (non-takedown) 10/22 components only.

All Faxon Rimfire products are designed and manufactured by Faxon Firearms in Fairfield, Ohio, and are covered by the Faxon Lifetime Guarantee. Ruger® and 10/22® are registered trademarks of Sturm, Ruger & Co., Inc. Faxon Firearms is not affiliated with or endorsed by Sturm, Ruger & Co., Inc.

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