The Lumley Arms Tikka T3/T3x AICS Conversion Kit converts the CTR pattern bottom metal found on select Tikka T3 models (CTR, UPR, Arctic, Wild Boar) and the Colt C-19 to accept any short-action AICS pattern magazine (223 / 308 / WSM). Lumley supplies a replacement magazine well and replacement lever that attaches to your existing trigger guard and reuses the same factory action screws (these last two components are not included in this kit and reuses the factory supply parts).
AICS magazines have a number of advantages over the factory CTR magazines. These include allowing a longer COAL, a lower price for comparable quality, availability to suit more cartridge case types, and being made by more manufacturers. As of June 2024, the compatible models for this kit are:
- Tikka CTR
- Tikka UPR
- Tikka Arctic
- Tikka Wild Boar
- Tikka Ranch
- C-19 (Colt Canada)
When stripping the bolt assembly for cleaning and maintenance after exposure to the elements, most shooters don't consider stripping the firing pin for a comprehensive cleaning. Lumley Arms kit allows you to replace these factory original components upon reassembly.
Advantages of Lumley Arms Tikka T3 / T3x AICS Conversion Kit:
- Allows the use of reliable AICS Magazines
- High quality material and construction
- Economical solution to start using AICS magazines
Installation Tech Note:
Fitting Guide:
(1) Assembly is required. The kit requires your factory bottom metal to be disassembled first. If in doubt, we recommend contacting a professional gunsmith.
Minimum tools required for assembly are:
- 3mm metric hex key
- 4mm metric hex key
- small nylon punch
- 2mm (or 1.5mm) steel pin punch
- flat smooth file
- small wire cutters
- nylon bench block
- gunsmith's hammer
(2) The magazine release lever is deliberately manufactured to the maximum possible length where, with the supplied pillars installed, AICS magazines just click in and the bolt just clears the feedlips. Many shooters will want a slightly looser fit than this, whereas some will not. Lumley Arms have tested this precise fit with multiple magazines from Accuracy International, Accurate Mag, Alpha Industries, Magpul, and MDT. For a reliable fit to your specific rifle the magazine lever may need to be filed down to suit your personal preferences. We recommend first assembling and testing the DBM to your rifle. If the lever is shortened, Lumley recommends only taking 0.5mm off the tip before refitting and testing magazine function.
(3) For the coil spring that provides tension to the magazine release lever, you can either reuse the one from your factory bottom metal or the one we provide. Lumley Arms part is deliberately manufactured slightly longer than required and cannot be installed at full length. Lumley supplies 3 coil springs, only 1 coil spring is required. Use wire cutters to remove coils until you have achieved the tension preferred - which in most cases will be by removing between 3 to 5 coils. If you cut off too many and aren't satisfied with the tension, you have 2 spare springs remaining. Test magazine release thoroughly based on your shooting style, with this design some shooters will remove magazines using their index finger (generally requires less tension) whilst others with their thumb (generally requires more tension).
(4) Take care when assembling the magazine release lever, spring and dowel pin. Close attention is needed to avoid marring the anodized surface of the trigger guard when tapping in the dowel pin to secure the magazine release lever and the spring. Use a nylon punch to first get dowel pin in 95% of the way, then carefully use a 1.5mm or 2mm brass or steel pin punch to finish placing it with one firm tap. Lumley recommends placing the trigger guard against a padded surface or on nylon bench block to drive in the dowel pin. Note that the dowel pin is splined on one side and is designed to sit slightly recessed from either face of the trigger guard.
| Product Features: |
- Rifle Compatibility: T3 models (CTR, UPR, Arctic, Wild Boar) and the Colt C-19
- Rifle orientation Compatibility: Ambidextrous fit to both right-handed and left-handed rifles
- Magazine Compatibility: Accepts all short action AICS pattern magazines (223 / 308 / WSM Family)
- Includes: Magazine lever dowel pin and lever coil spring
- Material, construction and finish:
- The magazine well is CNC machined from high quality 7075-T76 aerospace alloy
- Hard coat type III black anodized
- The magazine lever is CNC machined from 17-4 stainless steel then glass bead blasted
- The coil spring for the magazine release lever is made from piano wire and then zinc plated
- Made in Australia by Lumley Arms INC.
