The Tikka T3x ACE and UPR sit at the top of Tikka's range — the ACE built for PRS and target shooting, the UPR for precision hunting. If you've invested in one of these rifles, dialling in the fit is what turns a great factory rifle into your rifle. This guide covers what to set up, in what order, and what aftermarket options actually fit these platforms.
ACE vs UPR — and why fit is different
Both platforms use a different buttstock setup to the standard T3x hunting stock, so some parts built for the regular T3x won't drop straight on. The ACE uses a chassis with a Torx-fastened buttpad that already offers vertical and horizontal micro-adjustment. The UPR uses a screw-fastened pad closer to the OEM T3x, but with its own stock profile and screw pattern (owners note it shares architecture with the Sako S20). Knowing which you have matters before you buy spacers or pads.
Length of pull — set this first
Length of pull (LOP) is the distance from the trigger to the back of the recoil pad. On a competition or hunting rifle it's one of the highest-impact fit adjustments: too long and you reach for the trigger and crowd the scope; too short and you can't load the bipod or build a consistent position. ACE shooters want exact, repeatable LOP across stages; UPR hunters want to adjust for summer versus winter layers.
Factory options are limited. Beretta sells an OEM spacer kit, but availability is patchy and pricing is high; DIY 3D-printed spacers float around the forums, which tells you the demand isn't being met cleanly. The Nokka ACE/UPR LOP Spacer Kit is available now — purpose-built for the platform's mounting pattern, bolt-on and fully reversible, the same approach as our standard T3x LOP kit. See the kit →
Comb height and cheek weld
With a scope mounted, your eye needs to sit naturally behind the optic. The ACE chassis includes an adjustable comb, so most ACE owners can dial this in on the stock itself. The UPR's comb is fixed, so scoped UPR shooters benefit from raising the comb to meet the optic. (Note: our standard drop-comb cheek riser is engineered for the OEM hunting stock — confirm your stock profile before fitting.)
Recoil direction — staying on target
It's not just how much a rifle recoils, but which way. A recoil pad that sits square to the bore drives recoil straight back into your shoulder instead of levering the muzzle up — so the reticle settles faster and you can spot your own shots. That's the principle behind the adjustable buttpads on premium chassis, and it matters most in fast strings and with magnum calibres. ACE owners can square their pad with the chassis adjustment; for fixed stocks, a wedge-angled spacer does the same job.
Trigger
The ACE and UPR are built on the Tikka T3x action and use the same trigger group, so a drop-in Tikka trigger spring works here too — taking the factory pull down to a crisp ~2 lb without altering the trigger geometry or safety. It's the cheapest meaningful upgrade you can make to either rifle.
What fits today, what's coming
- Available now: the Tikka trigger spring fits the ACE and UPR trigger group.
- Available now: the Nokka ACE/UPR LOP Spacer Kit — adapter plate + 10mm/20mm spacers, up to 35mm of length of pull.
- Check fitment: our standard cheek riser and LOP kit are dimensioned for the OEM T3x/T1x hunting stock, not the ACE chassis or UPR stock.
Designed in Finland, built in Australia, and tested on real rifles. Ready to dial in your ACE or UPR? Get the LOP Spacer Kit →
Make your Tikka fit you
The Drop Comb Cheek Riser and LOP Spacer Kit, bundled and set up to work as a system — at a price that beats buying them separately.
