TM22 Series

The Derya TM22 series, manufactured by Derya Arms, consists of semi-automatic and lever-action rimfire rifles chambered in .22 Long Rifle (.22LR). Designed for plinking, recreational shooting, and versatility, the TM22 blends modern features with classic appeal. Available in multiple variants—TM22 Standard, TM22 Feather, TM22 Flash, TM22 Metal, and TM22 Lever Action—these rifles cater to a range of preferences. Below are the key specifications and frequently asked questions.

General Features Across TM22 Models

Caliber: .22 Long Rifle (.22LR)
Action Types: Blowback-operated semi-automatic (Standard, Feather, Metal) or lever-action (Lever Action)
Barrel Lengths: 18" or 20" (model-dependent)
Magazine Capacity: 10 rounds standard (2 magazines included); 15- and 25-round options available aftermarket
Barrel Threading: 1/2x28 TPI (except TM22 Standard)
Material: Varies by model (7075 aluminum, premium polymer, or hybrid)
Sights: Model-specific (adjustable iron sights, Picatinny rail, or carry handle with front post)
Compatibility: AR-type grips, commercial buffer tube adapters, some aftermarket accessories
Finish: Black anodized (aluminum parts) or melonite (steel parts), all done in-house

Differences Between TM22 Models

TM22 Standard

Description: Semi-automatic rifle with a hybrid construction (7075 aluminum receiver/handguard, polymer grip/stock).
Barrel Length: 18" or 20"
Weight: 5 lbs
Furniture: Polymer AR-style grip, 10" aluminum free-floating M-LOK handguard, fixed stock (upgradeable to adjustable)
Unique Features: Split receiver with Picatinny rail cover plate, AR-compatible buffer tube, 2-lb trigger, no threaded barrel.
Magazines: Proprietary 10-round aluminum single-stack magazines.

TM22 Feather

Description: Lightweight semi-automatic variant with polymer furniture for easier handling.
Barrel Length: 18"
Weight: 4.5-5 lbs
Furniture: Polymer adjustable stock, polymer grip, carry handle with front sight post (removable).
Unique Features: "Feather-light" design with polymer replacing some metal components.
Magazines: Proprietary 10-round polymer magazines.

TM22 Flash

Description: Lightweight semi-automatic variant with polymer furniture for easier handling.
Barrel Length: 18"
Weight: 4.5-5 lbs
Furniture: Polymer adjustable stock, polymer grip, M-LOK forend with full top rail and flip up sights.
Unique Features: "Feather-light" design with polymer replacing some metal components.
Magazines: Proprietary 10-round polymer magazines.

TM22 Metal

Description: All-metal semi-automatic rifle with 7075 aluminum construction for durability.
Barrel Length: 18" or 20"
Weight: 6-7 lbs
Furniture: Aluminum M-LOK handguard, polymer AR-style grip (replaceable), aluminum buffer tube with skeletonized buttplate or adjustable stock.
Unique Features: Premium build with a 2-lb flat-faced trigger, threaded barrel.
Magazines: Proprietary 10-round aluminum magazines.

TM22 Lever Action

Description: Lever-action rifle blending traditional operation with modern materials.
Barrel Length: 18" or 20"
Weight: 7 lbs
Furniture: 7075 aluminum receiver/forend, adjustable stock option.
Unique Features: Ambidextrous lever-action design, fully rifled barrel for accuracy.
Magazines: Proprietary 10-round aluminum magazines.

Sights

Standard: Adjustable rear sight, detachable fiber optic front sight.
Metal: Picatinny rail (no iron sights).
Feather: Carry handle with front sight post (removable).
Flash: Flip Up
Lever Action: Adjustable iron sights, top rail for optics.

Material Used and Finish Process

Barrels: 4140 annealed extruded steel (crack-inspected, drilled, machined).
Bolt/Action Components: Machined from solid 4140 steel blocks.
Receivers: 7075 aluminum (Metal) or premium polymer (Standard, Feather, Lever Action).
Handguards: 6061 extruded aluminum (Metal) or proprietary designs.
Polymer Parts: Premium polymer (Feather, Flash, Standard, Lever Action furniture).
Finish: In-house black anodizing (aluminum), and Melonite (steel)

Frequently Asked Questions (FAQs)

Q: What’s the difference between Derya-branded and Rock Island Armory-branded TM22 rifles?
A: The only difference is branding; both are made by Derya Arms. Parts from Derya’s website are compatible with both (within reason). For warranty/info: contact Rock Island Armory (RIA, APINTL-Pahrump NV) for RIA-branded rifles, or Derya for Derya-branded ones. Pre-2025 TM22s in the USA were RIA-branded; post-2026 are Derya-branded.

Q: What’s the primary purpose of the TM22 series?
A: Recreational shooting, plinking, and small game hunting. Semi-auto models (Standard, Feather, Flash, Metal) are ideal for rapid-fire, while the Lever Action offers a classic experience with modern durability.

Q: Are magazines interchangeable between TM22 models?
A: Yes, all TM22 magazines (10-, 15-, 25-round) are interchangeable across models.

Q: What is length of pull?

A: Length of pull varies by TM22 model. The TM22 Standard is 13", however, it is compatible with D Spacers to increase length of pull. The TM22 Lever is 13.58", however, it is also compatible with D Spacers to increase length of pull. The TM22 Metal is 13.58" for length of pull. The TM Feather is adjutable stock that can be adjsuted goes from 13-14.5" for length of pull.

Q: What does TM stand for in TM22?

A: TM stands for TradeMark 22, meaning its a trademark for 22 caliber firearms.

Q: Why doesn’t my magazine work in the TM22 Standard due to no front notch?
A: Newer TM22 magazines have a front notch for secure locking in the Standard’s paddle-style release. Older notchless magazines work with Feather, Flash, Metal, and Lever Action but not Standard. New notched magazines are backward compatible. Modify older ones with caution or buy notched versions from Derya retailers.

Q: Can I use aftermarket AR parts with the TM22?
A: Yes, AR-type grips and buffer tube adapters work on all models. Some AR stocks fit semi-autos, but handguards are proprietary.

Q: Where do I get a cheek riser for my TM22 Standard?
A: Available at https://derya.us/tm22-standard-stock-kit/.

Q: Is the TM22 threaded for suppressors?
A: Yes, Feather, Flash, Metal, and Lever Action have 1/2x28 TPI threading. The Standard does not.

Q: How do the weights compare across models?
A: Feather and Flash (4.5-5 lbs), Standard (5 lbs), Metal (6-7 lbs), Lever Action (7 lbs).

Q: How durable are the TM22 models?
A: Metal’s 7075 aluminum build is highly durable. Feather and Standard’s premium polymer stocks are robust. Lever Action’s aluminum construction ensures longevity with care.

Q: What’s the trigger like on the TM22?
A: Semi-auto models feature a 2-lb flat-faced trigger with short take-up and quick reset. Lever Action has a typical lever-action trigger.

Q: I have a TM22 Cadet—what’s that?
A: The TM22 Cadet is the Canadian variant. Derya sells to 60+ countries with region-specific names. Contact your Canadian Derya dealer or visit Derya Turkiye’s website for details.

Q: Where are TM22s made?
A: All TM22s are Made in Turkiye by Derya

Q: What’s the price range for TM22 models?
A: Check MSRP on derya.us for current pricing; varies by retailer.

Q: What is the minimum recommended ammunition velocity (FPS) for reliable cycling in the semi-automatic TM22 models? Does the rifle perform better with high-velocity .22LR, and is it compatible with subsonic rounds?
A: The minimum recommended ammunition velocity for reliable cycling is around 1040 FPS. The rifle performs better with high-velocity .22LR ammunition, typically in the 1200-1350 FPS range, as it ensures consistent cycling. It is not fully compatible with subsonic rounds (under 1100 FPS, such as 700-800 FPS), which often fail to cycle reliably without modifications like lighter recoil springs or specialized kits.

Q: What is the recommended break-in period for the TM22, including the number of rounds needed to ensure reliable function?
A: There is no strict factory-required break-in period, but firing 200-500 rounds is commonly recommended to smooth out the action and ensure reliable function.

Q: What are common causes of failures to feed (FTF) or failures to eject (FTE) in the TM22, and what are the factory-recommended fixes, such as ammo changes or maintenance?
A: Common causes of FTF include improperly seated magazines, dirty feed ramps, weak or inconsistent ammunition, and magazine variances. FTE issues often stem from dirty extractors, weak extractor springs, bent ejectors, dirt buildup in the action, or poor-quality ammo. Factory-recommended fixes include thorough cleaning of the action, extractor, and ejector; switching to higher-velocity or more consistent ammo; replacing worn extractors or springs; and ensuring proper magazine seating and alignment.

Q: Which specific ammunition brands or types (e.g., Browning, Federal bulk) have been known to cause cycling issues, and what alternatives do you recommend?
A: Brands or types known to cause cycling issues include Winchester Wildcat, Federal Automatch (in some rifles), and certain CCI batches with up to 10% failure rates. Alternatives recommended for reliable performance include CCI Blazer, CCI Mini-Mag, Norma Tac-22, Aguila Extra HV, and Browning BPR.

Q: What is the expected out-of-box accuracy for the TM22, including typical group sizes at distances like 10 yards, 25 yards, and 50 yards, when fired from a rest with suitable ammo?
A: Out-of-box accuracy is generally good for a stock rifle. Typical group sizes from a rest with suitable ammo are around 0.25-0.5 inches at 10 yards, 0.5-1 inch at 25 yards, and 1.5-2 inches at 50 yards, though some achieve sub-1-inch groups at 50 yards with premium ammo like CCI Stingers or Remington Target.

Q: How is the TM22 factory-sighted for point of impact (POI), such as at what distance and with what sight picture?
A: The TM22 is not always precisely zeroed from the factory, but iron sights are typically set for a rough zero at 25-50 yards. The sight picture uses a front post aligned in the center of the rear notch (rectangular or squared), with the top of the post level with the top of the rear sight for point of impact at the target.

Q:What is the shelf life of the TM22 when stored properly in a cool, dry environment, and how long can it remain functional without use?
A: When stored properly in a cool, dry environment with occasional inspection and light lubrication, the TM22 has an indefinite shelf life and can remain functional for decades without use. Proper storage prevents rust and degradation, allowing it to last 50+ years or more.

Q: What is the heat resistance of the TM22's polymer components, including the temperature range where they maintain shape and rigidity (e.g., softening or deformation temperature)?
A: The polymer components maintain shape and rigidity in temperatures from -20°C to 60°C (-4°F to 140°F), resisting deformation or softening within this range. Softening may begin around 176-286°F, depending on the specific polymer blend.

Q: What is the melting point of the TM22's polymer frame or furniture, and at what temperatures could it lead to failure?
A: The melting point of the polymer furniture is approximately 120-150°F for some blends, though higher-grade polymers used in firearms can withstand up to 400°F before melting. Failure from deformation or softening could occur at temperatures above 176°F, especially under stress.

Q: In durability tests, how many rounds has the TM22 survived without failure across different models?
A: In durability tests, the TM22 has survived over 100,000 rounds without major failure in many cases, with some models handling millions of rounds with proper maintenance. Reliability is high, though individual results vary based on ammo and upkeep.

Q: Does changing the trigger spring affect the TM22's reliability, such as causing incomplete resets or light strikes?
A: Changing the trigger spring can affect reliability if done improperly or if too light, potentially causing incomplete resets or light strikes.

Q: What fixes are recommended for magazine feed issues, such as polishing the inside of the magazines?
A: Recommended fixes include polishing the feed lips and inside of the magazines to reduce friction, cleaning with CLP or dry lube, deburring rough edges, and adding electrical tape to reduce wobble.

Q: Are 15-round and 25-round magazines readily available, and what is the status on sourcing them?
A: Yes, 15-round magazines and 25-round magazines are readily available. Derya makes all the magazines in house and at a high volume.

Q: What is the detailed procedure for removing the front sight on the TM22 base/standard model, including how to access the hard-to-reach screw?
A: The front sight is dovetailed, not screwed in. To remove: Secure the barrel in a vise with wood blocks for protection. Use a 1/4-inch brass punch and hammer to drift the sight out from left to right (ejection port side to opposite). Apply one decisive strike; if stuck.

Q: What challenges might left-handed users face with the TM22 semi-automatic models, and are there options for conversion to left-handed controls?
A: TM22 is built to also work as well as possible with Left-handed user. Left-handed users may face challenges with right-side ejection, potentially causing brass to hit the face or arm.

Q: What are the recommended cleaning and lubrication procedures for the TM22, including specific products or frequency?
A: Clean every 500-1000 rounds or after each range session, focusing on the bolt, extractor, ejector, trigger group, and barrel. Procedure: Disassemble, use a bore snake or brush with solvent for the barrel; clean action with CLP or nylon brush; lubricate lightly with oil on the bolt and rails. Dry lube for magazines.

Q: How should users troubleshoot squib loads or stuck bullets in the TM22 barrel, and what safety precautions are advised?
A: To troubleshoot: Unload the firearm completely, keep it pointed in a safe direction, and remove the barrel if possible. Inspect from the breech (not muzzle) to confirm the stuck bullet. Use a cleaning rod (wood or brass, softer than steel) to gently push the bullet out from the breech end; tap if needed but avoid damaging the crown. Safety precautions: Treat as loaded, never fire another round, wear eye protection, and seek professional help if unsure to avoid explosion or injury.

Q: What is the detailed manufacturing process for the TM22 receiver?
A: For the TM22 Standard: The receiver is manufactured from premium polymer with embedded steel action components for durability. The process involves injection molding the polymer under high pressure (around 200-250°C) in precision molds, incorporating steel inserts during molding for the action rails and critical stress points, followed by cooling, trimming, quality inspection for defects like voids, and final assembly. No post-molding heat treatment is applied, but the polymer includes fiber reinforcements for strength. For the TM22 Feather and TM22 Flash: Similar to Standard, using lightweight premium polymer with integrated steel action inserts. Injection molding forms the receiver, embedding steel components for the bolt path and mounting points during the process, then cooled and inspected. The focus is on reducing weight while maintaining rigidity through reinforced polymer blends. For the TM22 Metal: The receiver is CNC machined from 7075 aluminum block, involving extrusion of aluminum blocks, precision milling for internal channels and mounting holes, drilling for pins, and T6 heat treatment for enhanced hardness and stress resistance, followed by anodizing for corrosion protection. For the TM22 Lever: The receiver uses premium polymer with steel action inserts, similar to Standard. Injection molded with steel reinforcements for lever pivot points and action components, cooled, trimmed, and inspected, adapted for lever-action mechanics with additional slotting during molding.

Q: What is the manufacturing process for components of the TM22, such as the bolt or barrel?
A:

The bolt is machined from cold-drawn steel material (not forged). The barrel is machined from a solid bar (deep-bore drilled, not forged). For steel parts: Materials undergo chemical composition analysis and hardness testing upon arrival, then heat treatment to required hardness, with specific areas induction-hardened for service life. Samples are crack-tested (ultrasonic) and tensile-tested. Barrel process: Drilled to 5.48 mm, reamed to 5.52 mm, rifled, chambered with machine then hand reamer, polished. All parts: Vibration deburring, manual deburring, sandblasting, then coated (Cerakote, Chrome, Manganese Phosphate, or Melonite/QPQ for steel; anodizing/hard anodizing for aluminum).

Q: What is the stock (OEM) trigger spring weight for the TM22 semi-automatic models? A: The stock trigger spring weight is approximately 0.55 lb (0.25 kg), though overall trigger pull is 2-2.2 lb (0.90-1 kg) due to multiple factors.

Q: How does the trigger spring differ from the overall trigger pull weight, and how does it affect trigger pull dynamics?
A: The trigger spring controls forward-backward trigger movement and has a weight of ~0.55 lb. Overall trigger pull weight (2-2.2 lb) is the total force to fire, influenced by hammer spring, friction surfaces, disconnector, etc. The spring assists reset but doesn't act alone—stronger spring reduces perceived pull, weaker may affect reliability.

Q: Can you change the TM22 Feather and TM22 Flash forend and sights to make look like each other? What is process on doing so?

A: Yes. To convert Feather to Flash: Install Flash forend, Flash upper (due to extra screw), and flip-up sights. To convert Flash to Feather: Install Feather forend, Feather carry handle (rear sight), and Feather front sight (tightens to barrel, incompatible with Flash forend). Flash upper can remain, leaving screw hole empty.

Q: What is the standard factory recoil spring weight for the TM22 semi-automatic models?
A: The standard factory recoil spring weight is approximately 7-8 lbs across semi-automatic models, designed for reliable blowback cycling with standard .22LR ammunition. The recoil spring force is approximately 40 N.

Q: What screw sizes are used for the front and rear sights on the TM22?
A: For TM22 Feather Front sight uses M4x0.7 screws (10-15mm length, hex head, 3mm Allen key). Rear sight uses M3x0.5 screws (8-12mm length, with adjustment slots, 3mm Allen key). For the Flash model, sights use M5x30 screws (same as DY12). Torque to 15 in-lbs to avoid stripping.

Q: Where is the serial number located on the TM22?
A: For TM22 Standard: Engraved on the left side of the receiver, below the charging handle slot. For TM22 Feather: On the right side of the polymer receiver, near the magazine well. For TM22 Metal: On the bottom of the aluminum receiver, forward of the trigger guard. For TM22 Lever: On the tang of the receiver or left side near the lever pivot point.

Q: For the TM22 Lever Action model, why is the trigger block safety awkward in certain positions (e.g., benchrest), and are there modifications to improve it?
A: The trigger block safety is awkward in benchrest or prone positions because it requires firmly gripping the lever against the stock to disengage, which disrupts stable aiming and hand placement due to the traditional lever geometry optimized for offhand shooting. This can cause fatigue or inconsistent pressure. Always ensure modifications maintain safety and comply with regulations; professional gunsmithing is recommended.

Q: What is the accidental magazine release issue on the TM22 Lever Action when carrying or laying it down, and how can it be prevented?
A: The issue arises from the exposed magazine release button being accidentally pressed against clothing, the ground, or gear during carrying or laying down, due to its location and relatively light spring tension, potentially dropping the detachable magazine. Prevention includes upgrading to a heavier magazine catch spring for more resistance, adding a protective guard or bumper around the button, using a magazine retention strap, or carrying with the rifle oriented to avoid pressure on the left side. Regularly check magazine seating and avoid laying it on the release side.

Q: How can older TM22 magazines without the front notch be modified to work with the Standard model, and what tools or precautions are recommended?
A: Modify by adding a notch on the back of the magazine body (about 1/8" wide x 1/16" deep) to engage the Standard's catch, using a Dremel with cutoff wheel or fine file, referencing a notched magazine for exact placement. Tools: Dremel or file, calipers for measurement, sandpaper for deburring. Precautions: Wear safety glasses and work in a ventilated area; avoid overcutting to prevent structural weakness; clean out debris to avoid jams; test with unloaded rifle; modification may void warranty and should be done carefully to ensure reliability.

What are different item numbers and UPCs for TM22?

Website Type	Item Number	Short Description	UPC Code	Frame Finish	Magazine Capacity	Number of Magazines Included	Notes
TM22 Standard	TM22.STAN.18	TM22 Standard 22lr 10rd 18"	850067243571	Black	10 rounds	1
TM22 Standard	TM22.STAN.FDE.18	TM22 Standard FDE 22lr 10rd 18"	850067243793	FDE	10 rounds	1
TM22 Standard	TM22.STAN.ODG.18	TM22 Standard ODG 22lr 10rd 18"	850067243809	ODG	10 rounds	1
TM22 Standard	TM22.STAN.PINK.18	TM22 Standard Pink 22lr 10rd 18"	850067243816	Pink	10 rounds	1
TM22 Standard	TM22.STAN.BC.18	TM22 Standard Black Cherry 22lr 10rd 18"	850067243823	Black Cherry	10 rounds	1
TM22 Standard	TM22.STAN.GF.18	TM22 Standard Grey 22lr 10rd 18"	850067243519	Grey	10 rounds	1	Dunham’s Exclusive
TM22 Feather	TM22.FEAT.18	TM22 Feather 22lr 10rd 18"	850067243588	Black	10 rounds	1
TM22 Metal	TM22.METAL.20	TM22 Metal 22lr 10rd 20"	850067243595	Black	10 rounds	1
TM22 Lever	TM22.LEVER.20	TM22 Lever 22lr 10rd 20"	850067243601	Black	10 rounds	1
TM22 Flash	TM22.FLASH.18	TM22 Flash 22lr 10rd 18"	850067243786	Black	10 rounds	2
TM22 Flash	TM22.FLASH.ODG.18	TM22 Flash ODG 22lr 10rd 18"	850067243830	ODG	10 rounds	2
TM22 Flash	TM22.FLASH.FDE.18	TM22 Flash FDE 22lr 10rd 18"	850067243847	FDE	10 rounds	2
TM22 Flash	TM22.FLASH.GREY.18	TM22 Flash Grey 22lr 10rd 18"	850067243854	Grey	10 rounds	2