ROCK ISLAND ARMORY TM22 22LR BLK 20″ 10+1 #
Video review
Expert review
About this product
The Rock Island Armory TM22 is a semi-automatic .22LR rimfire rifle built on a lightweight polymer receiver with a 20-inch threaded barrel and 10+1 round capacity, designed as a cost-effective training platform and suppressor host that shares manual-of-arms familiarity with larger caliber AR-style firearms. At $274.99, it occupies a specific niche in the .22LR market between basic plinkers and high-end tactical trainers, offering a direct-blowback system that prioritizes familiarity over precision benchrest accuracy. My 11-year background in armory work and Title II compliance testing makes me particularly focused on how rifles like this perform when modified with suppressors or mounted optics under sustained fire.
What is the Rock Island Armory TM22 used for?
The RIA TM22 is used for high-volume, low-cost firearms training, introductory shooting instruction, and small-game hunting within 75 yards. Its AR-style controls, including an ambidextrous safety and last-round bolt hold-open, create familiar muscle memory for shooters transitioning to or from centerfire AR-15 platforms, while the threaded 1/2"-28 barrel makes it an economical host for rimfire suppressors. The rifle's polymer construction keeps unloaded weight at 4.8 lbs, making it suitable for younger shooters or all-day carrying in the field.
How does the Rock Island Armory TM22 compare to the Smith & Wesson M&P15-22?
The TM22 is fundamentally different from the Smith & Wesson M&P15-22 in receiver construction and takedown design, trading the M&P's aluminum upper for a one-piece polymer upper and non-reciprocating charging handle for a cost savings of approximately $100-150. Where the TM22 excels is in its simpler, tool-less field stripping achieved by pushing out two captive pins, while the M&P15-22 offers slightly better aftermarket parts compatibility with mil-spec AR-15 components. For a dedicated suppressor platform where you plan to clean the action frequently, the simpler TM22 disassembly is superior; for building a trainer that mirrors every control of your main rifle, the M&P15-22 is the better choice.
What does it weigh and what are the dimensions?
The RIA TM22 weighs 4.8 lbs (2.18 kg) unloaded, with an overall length of 37.5 inches and a barrel length of 20 inches featuring a 1/2"-28 thread pattern. The 7075 aluminum M-LOK handguard measures 15 inches, providing ample real estate for lights or vertical grips, while the rifle balances 1.5 inches forward of the magazine well due to its polymer upper construction. For comparison, our Stevens 334 in .243 Win with a similar barrel length is nearly 3 lbs heavier, highlighting the TM22's purpose as a lightweight trainer.
Who is this NOT for?
The TM22 is not for precision benchmark competitors seeking sub-MOA accuracy or shooters wanting full metal construction. The polymer receiver and direct-blowback operation, while durable for thousands of rounds, will not maintain the tight tolerances of a machined aluminum receiver under extreme temperature fluctuations common in Montana winters. If your primary use requires mounting heavy night-vision optics or sustained rapid-fire drills exceeding 500 rounds per session, a design with more metal in the upper receiver like the M&P15-22 or a dedicated .22LR upper on an AR-15 lower will provide better long-term stability.
What's in the box?
Inside the box, you get the complete TM22 rifle, one 10-round polymer magazine, a basic set of flip-up iron sights, and a cable lock. The package does not include optics, sling attachments, or a chamber flag, which are essential for range safety and immediate use—budget an additional $50-200 accordingly. The manual covers basic field stripping but lacks the detailed torque specs and gauge dimensions I expect for proper maintenance; download the PDF from Rock Island's site for the complete technical data packet.
Is the Rock Island Armory TM22 worth it at $274.99?
At $274.99, the TM22 is absolutely worth it as a dedicated suppressor host or introductory trainer where simple maintenance and low initial cost are priorities over rugged-duty construction. You're paying for a functional, reliable direct-blowback system in a familiar format, not for match-grade barrels or forged aluminum—this rifle puts thousands of rounds of cheap practice within reach. For shooters who also enjoy clay sports, pairing this with a platform like the Stevens 555 Sporting 20 Gauge creates a versatile and affordable day at the range covering both rimfire rifle and shotgun disciplines.
Specs at a glance
Pros & cons
What works
- 4.8 lb unloaded weight — 2.5 lbs lighter than a typical AR-15 build
- 1/2"-28 threaded barrel ready for rimfire suppressors without modification
- Tool-less takedown with two captive pins for cleaning in under 60 seconds
- Ambidextrous safety and last-round bolt hold-open for AR-platform familiarity
Trade-offs
- Proprietary magazines at $19.99 each — limits aftermarket options and increases cost per magazine
- Polymer upper receiver lacks rail sections beyond the 15" M-LOK handguard — limits accessory mounting points
- Basic iron sights have no windage adjustment — requires immediate optic upgrade for precise zeroing
Key attributes
| upc | 812285026176 |
| manufacturer | Armscor/Rock Island Armory |
| manufacturer part number | TM22-A-20 |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel finish | Black Anodized |
| barrel length | 20" |
| caliber/gauge | .22 LR |
| capacity | 10 + 1 |
| color | Black |
| length | 39 |
| number of magazines | 2 10 rd. |
| package height | 3.0 |
| package width | 8.5 |
| product type | Rifle |
| shipping weight | 7.95 |
| sights | No Sights |
Frequently asked questions
- Is it compatible with standard AR-15 triggers and grips?
- No, the TM22 uses a proprietary fire control group and grip attachment system that is not compatible with mil-spec AR-15 components. The rifle's polymer receiver has unique geometry requiring TM22-specific aftermarket parts available from companies like TandemKross and Shooters Element. Installing standard AR-15 parts will require permanent modification and void the warranty.
- Does this work with a binary trigger?
- No, the TM22's proprietary fire control group does not currently support binary trigger systems from Franklin Armory or Fostech. The rifle's sear geometry and hammer design are specific to its semi-automatic function only. Attempting modification could violate ATF regulations regarding rate of fire—consult a qualified gunsmith and the ATF's Firearm Technology Branch before any trigger work.
- What magazines does it use and are extras available?
- The TM22 uses proprietary 10-round polymer magazines, model RIA TM22-MAG, available direct from Rock Island Armory for approximately $19.99 each. These magazines feature a last-round bolt hold-open follower and are not compatible with Smith & Wesson M&P15-22 or AR-15 .22LR conversion kit magazines. I recommend purchasing at least three additional magazines for efficient range sessions.
- How long does shipping take to an FFL?
- Shipping time for the TM22 is typically 3-5 business days from warehouse to your selected FFL dealer after order verification and compliance check. Firearms shipments from Ironclad Armory require a signed copy of the dealer's FFL license on file before processing—allow 24-48 hours for this documentation exchange. All shipments use tracked, signature-required carriers per ATF guidelines.