HHA Tetra Review: Pins, Adjustments and Verdict

The HHA Tetra is a single-pin slider sight: one fibre-optic pin on a slide that you dial to the exact yardage, with the wheel set forward so a quiver can bolt on. This HHA Tetra review starts with a caveat: HHA now lists the whole Tetra series as "Discontinued", so you'll be buying leftover or used stock, and HHA's current wheel-driven sight is the NYTRX. If you'd rather buy something current, compare HHA single-pin bow sights on Amazon before you commit.

HHA Tetra specs and versions

Figures come from HHA's archived pages and instruction sheets. Where HHA didn't give a figure, we've used Lancaster Archery's listing and marked it (LAS).

HHA never published the sight's own weight; its 2019 store's 1.11 lb figure came with box dimensions, so it reads as a shipping weight.

Part numbers decoded

On Lancaster's listings, the TTR-5519 has a 1 5/8 in housing and .019 in pin, the TTR-5510 a .010 in pin, the TTR-3810 a 1 3/8 in housing and .010 in pin, and the TMX-5519 is the Tetra Max with a 1 5/8 in housing and .019 in pin. "XL" codes changed meaning over the years: on HHA's 2022 Tetra Max store, TMX-XL5519 and TMX-XL5510 were the 1 3/4 in housing, but on the 2019 Optimizer Tetra page, OTR-XL codes were the 2 in housing. Check the housing size, not just the code, when buying used.

A short history

HHA introduced the Optimizer Tetra in December 2017 as a 2018 model, the fourth generation of its Optimizer single pins. (Kevin Reese says early 2019; HHA's own notice is earlier.) The Tetra Max followed at the 2020 ATA Show, according to Reese, and HHA's 2022 store called it the "2021 Model".

How the Tetra works

A slider has one pin that you move. You range the target, turn the yardage wheel until the needle sits on that distance on the tape, then aim with the pin. HHA's launch notice describes "full-brass gearing" with a "rack and pinion gear wheel" driving the slide through its 2.1 in of travel.

Wheel-forward frame

HHA calls the design "quiver friendly, wheel forward": the wheel sits ahead of the frame, clear of a quiver bolted to the sight. Reese still suggested spacers and longer screws for "riser-hugging, wide-bodied" quivers. On the Tournament Edition, HHA's sheet has you mount the quiver to the dovetail block with an enclosed kit.

Infinite-adjust front end

HHA's 2018 notice credits the travel to the "Integrated SP-50 Infinite-Adjust Bracket", which lets you slide the scope to any height rather than jumping between holes. You set 20 yards on the bracket and keep the wheel's whole range for longer shots.

Windage without tools

Loosen the wing knob and slide the housing for big moves, then use the clicker for fine ones. HHA's 2019 page says the microdrive adds half an inch of travel, and its 2022 Tetra page says that once the sight is mounted "you can put the wrench set away".

R.D.S. tapes

HHA's launch notice says its R.D.S. (Range. Dial. Shoot.) tapes keep you on target "to the yard" out to 100 yards once you're sighted in at 20 and 60 yards. Lancaster still lists low-poundage and long-distance Tetra tapes for bows outside the standard set.

Every Tetra version

1. Tetra. The fixed-frame model described above.
2. Tetra Max. Two yardage wheels and a pointer you can swap for a magnifier, per HHA; Lancaster adds three vertical mounting positions.
3. Tetra LT. "Compact, lightweight", with "20-80 yard accuracy with smooth lever action", so a simpler, shorter-range design.
4. Tetra 4 Pin. A four-pin scope on the Tetra Max, Tetra or Tetra LT frame. HHA said these offer "all the features and benefits of our award-winning single pin sights in a four-pin configuration".
5. Tetra Hoyt Edition. Tetra or Tetra Max for Hoyt's Picatinny sight rail; HHA's sheet says to centre it on the rail and "clamp securely".
6. Tournament Edition. Dovetail versions with 4–5 in or 4–7 in bars. HHA said they fit the 2022 Mathews line-up with Bridge-Lock.

HHA also sold a Tetra RYZ and Tetra Max RYZ: Lancaster lists "RYZ/Long Distance Tetra" tapes as new for 2022, and retailer listings show 2-pin RYZ models. We couldn't read HHA's RYZ pages, so confirm a RYZ's spec with the seller.

Lancaster also lists an adapter that fits UltraView scopes to Tetras made in 2020 or later.

Mounting and sight-in, from HHA's instructions

1. Mount the frame with the two 10-24 screws, choosing the holes that suit your riser (or the dovetail block or Picatinny clamp).
2. Set the plate. On risers under 1 in thick, or a Mathews V3X using Bridge-Lock, HHA shows the Infinite Adjust Plate in one position (Image A); on wider risers, the other (Image B). To flip it, remove the 2nd axis block, turn the plate 180° and refit.
3. Level the 2nd axis. With the bow plumb in a vise, rotate the 2nd axis block until the bubble sits between the witness marks, then tighten the bottom screw before the top one.
4. Rough in windage, then shoot close. On a right-handed bow, HHA says turn the clicker counter-clockwise if arrows group left, clockwise if right; reverse it for left-handed bows.
5. Zero the set-up tape by winding the slide to its highest position and locking the dial. Its numbers aren't yardages.
6. Sight in at 20 yards by loosening the two plate screws a quarter turn and sliding the plate.
7. Sight in at 60 yards by turning the dial only, then lock it and note the set-up number, for example 48.
8. Fit the tape. Peel tape 48 from the kit, line its 60-yard mark up with the needle and seal the ends with the Mylar decal. On the Tetra Max, you fit the tape to a blank spool and swap it for the set-up spool.

The 3rd axis is optional: HHA says "most archers ignore this feature" and suggests a bow technician. The vise is tilted 45° forward, then 45° back, and the 3rd axis screw turned until the bubble reads true both ways, then locked.

Our guide to bow sight levels and the 2nd and 3rd axis explains why this matters on steep shots.

Set-up mistakes to avoid

• Using the dial for 20 yards. Set 20 on the plate and 60 on the dial, or the tape won't match.
• Guessing the 60-yard distance. HHA says accuracy "depends on an extremely accurate sighting at both 20 and 60 yards". Measure both.
• Buying the wrong hand. Reese notes the bracket "is not reversible", so order the hand you shoot.

What a named tester found

Kevin Reese tested a Tetra Max for Archery Business in July 2020, on a Bowtech Realm SR-6 at 70 lb and 27 in draw shooting 392.2-grain arrows at an average of 275 fps. His sight had a .010 in pin, Blue Burst light and 2X magnifier lens, mounted at its highest position to keep the full elevation range.

• Tape: his 20- and 60-yard numbers pointed to tape No. 50, and he ended up with "more than 130 yards of adjustability".
• Groups: arrows stacked at 20 yards, a 5 in horizontal group at 60, and "consistent elevation out to 100", though the group opened up, which he said was "definitely not the fault of the sight".
• Wish list: spacers for wide quivers, a second Blue Burst light like the one offered on HHA's King Pin, and clearer 3rd axis instructions (his sample came straight off HHA's ATA Show table, without a manual).

That's one tester with one bow: a useful data point, not proof.

How the Tetra compares

Figures come from each maker or Lancaster.

HHA Tetra vs NYTRX

The NYTRX is the wheel-driven sight HHA sells now that the Tetra is gone. HHA calls it "our first sight ever made with completely independent 1st, 2nd, and 3rd Axis adjustments", and you can "swap between indicators, scopes, and frames" for one to four pins. HHA lists NYTRX weights of 11.8 to 13.8 oz but never gave one for the Tetra, so we can't compare weight.

HHA Tetra vs Optimizer

The Optimizer Lite X is HHA's simpler, current single pin. It uses a bar moved against a tape, which Lancaster says locks "from 20 to 80 yards in 5-yard increments", and lists a 2nd axis but no 3rd. On paper, the Tetra's wheel, longer range and 3rd axis suit long shots and 3D better.

HHA Tetra vs Spot Hogg

Spot Hogg's Fast Eddie is a single- or double-pin slider with micro 2nd and 3rd axis and "silent, click free yardage adjustments". Our Spot Hogg Fast Eddie review covers its versions and weights. Its double pin and silent dial suit hunters, and it's still on sale.

Who should buy a Tetra, and who shouldn't

Good fits:

• 3D shooters and bowhunters who range their shots and want one clean pin (see our single-pin vs multi-pin comparison).
• Archers with two arrow set-ups, who'll benefit from the Tetra Max's second spool.
• Owners of Hoyt Picatinny or Mathews Bridge-Lock risers, who can use the Hoyt or Tournament Edition.

Look elsewhere if you:

• Hunt close, changing ranges from a tree stand. Fixed pins are quicker.
• Shoot long steep shots and want a 1st axis. The NYTRX has one; the Tetra doesn't.

A .010 in pin covers less target but gathers less light; our bow sight pin size guide explains the choice. Before hunting with the Blue Burst light, read our guide to whether lighted bow sights are legal and check your state's regulations.

Where to buy

New Tetras are leftover stock, so ask a pro shop or HHA's dealer locator. Bought used, the lifetime warranty won't transfer: it covers the original owner only. Owners can still find HHA Tetra replacement sight tapes on Amazon; check the tape number and model before ordering.

Frequently asked questions

Is the HHA Tetra discontinued?

Yes. HHA's sights page, archived in February 2026, lists the Tetra series as "Discontinued", and Lancaster Archery showed the main Tetra and Tetra Max models as unavailable on 13 October 2026. HHA still posts Tetra instructions and Lancaster still lists tapes and parts. The NYTRX is HHA's replacement.

What's the difference between the HHA Tetra and the Tetra Max?

Both share the 2.1 in slide, two-stage windage and 2nd and 3rd axis. HHA says the Tetra Max adds two yardage wheels, so you can keep tapes for two arrow set-ups, and a magnifier that swaps with the pointer. The original Tetra uses a single tape dial.

HHA Tetra vs NYTRX: which should I buy?

Buy the NYTRX if both are available. HHA says it's its first sight with independent 1st, 2nd and 3rd axis adjustment, and its scopes swap between one and four pins. The Tetra lacks a 1st axis and is discontinued, so it makes sense only as a well-priced used or leftover sight.

How far can you shoot with an HHA Tetra?

HHA claims its R.D.S. tapes keep you on target to the yard out to 100 yards once you've sighted in at 20 and 60 yards. Kevin Reese reported more than 130 yards of adjustment on his Tetra Max and consistent elevation at 100 yards, though his group opened up. Your bow and skill set the real limit.