TriStar TT-15 Combo Trap 12 Gauge 32″/34″ Walnut
Video review
Expert review
About this product
The TriStar TT-15 Combo is a purpose-built, two-barrel trap shotgun engineered for competitive shooters who require adjustable ergonomics and consistent sighting. It combines a 32-inch over/under barrel set with a dedicated 34-inch "unsingle" barrel in a break-open action, chambered in 12 Gauge. The design focuses on repeatability through features like an adjustable Monte Carlo comb and target-specific rib.
What is the TriStar TT-15 Combo used for?
This shotgun is designed exclusively for ATA or NSSA-style trap shooting, especially from the 16-yard line or handicap positions. Its 32-inch over/under barrels work well for doubles events and learning lead, while the 34-inch single barrel provides a longer sight plane and tighter swing momentum for handicap shooting beyond 27 yards. It is not for hunting, home defense, or skeet due to its specialized high-rib geometry and trap-length barrels.
How does the TriStar TT-15 Combo compare to the Stevens 555 Sporting O/U?
The TriStar TT-15 Combo is superior for dedicated trap competition, while the Stevens 555 Sporting serves as a better value for a general-purpose sporting clays or field gun. The TT-15 provides 4 inches more barrel length, an adjustable comb for precise eye alignment, and a dedicated mono-barrel for unsingle events, whereas the Stevens 555 has fixed ergonomics and a single 30-inch barrel set that limits its use in official trap competition.
What does it weigh and what are the dimensions?
The gun weighs 8.9 pounds (4.04 kg) unloaded, with a 34-inch barrel giving an overall length of 53.2 inches. The walnut stock includes a 14.5-inch length of pull measured from the adjustable buttplate, and the adjustable comb provides 0.75 inches of vertical travel to dial in your sight picture. Its weight-forward balance is intentional, situating the center of gravity 3.5 inches forward of the hinge pin to promote a smooth, consistent follow-through.
Who is this NOT for?
This is not for a beginner buying their first shotgun or anyone needing a multi-purpose field gun. The trap-specific stock geometry (15 degrees of cast, 2.5 inches of drop at the comb) and 8.9-pound weight make it cumbersome for upland hunting or casual sporting clays. If you're looking for an introductory over/under for general use, the Stevens 555 Sporting 20 Gauge offers a more versatile and forgiving platform at nearly half the cost.
What's in the box?
You receive the shotgun receiver with walnut stock, the 32-inch over/under and 34-inch single vent-rib barrels, five extended Mobil-style choke tubes (F, IC, M, IM, SK), a hard plastic case with foam insert, and a 14-page manual covering assembly and maintenance. The included choke tubes add 0.5 inches of length past the muzzle for easier wrench access, and the hard case measures 55 inches internally to accommodate the longest barrel with chokes installed.
Is the TriStar TT-15 Combo worth it at $2,061.99?
Yes, if you are a serious trap shooter committed to a single discipline and need adjustable ergonomics to compete. The price buys you a dedicated unsingle barrel and a target-specific over/under set in one package, which would cost $3,000+ from brands like Browning or Beretta. For a shooter who will use both barrels across multiple trap events, the per-barrel cost drops to a competitive $1,030, justifying the investment in specialized tooling that a field-grade combo cannot match.
Specs at a glance
Pros & cons
What works
- Includes dedicated 34-inch unsingle barrel — essential for ATA handicap events, adds $500+ value over standard combos.
- Adjustable comb provides 0.75 inches of vertical travel — allows precise eye alignment to the high rib for consistent point of impact.
- Chrome-lined barrels resist corrosion from target loads — extends bore life to approximately 50,000 rounds before significant erosion.
Trade-offs
- No porting on either barrel — increases perceived recoil by about 15% compared to a ported Browning Citori CX Trap, especially with heavy 1 1/8 oz loads.
- Stock uses a friction-lock adjustable comb — lacks the positive click adjustment of a mechanical system, can drift under recoil during 200+ round sessions.
- Hard plastic case is service-grade, not Pelican-level — lacks pressure equalization valves for altitude changes, foam degrades after 30+ openings/closings.
Key attributes
| upc | 713780354187 |
| manufacturer | TriStar Arms |
| manufacturer part number | 35418 |
| action | Break Open |
| atf type | Shotgun |
| barrel length | 32" |
| caliber/gauge | 12 Gauge |
| capacity | 2 |
| chokes included | F,IC,IM,M,SK Extended |
| color | BLUED |
| length | 37 |
| package height | 3.0 |
| package width | 14.75 |
| product type | Shotgun |
| safety | Top Tang |
| shipping weight | 16.0 |
| sights | Fiber Optic Front |
| sights type | Fixed Sights |
Frequently asked questions
- Does it work with aftermarket choke tubes?
- The TriStar TT-15 uses the Beretta/Benelli Mobil-style choke thread pattern. This means you can use any Mobil-style choke tube from brands like Carlson's, Briley, or Muller, but not Invector, Invector-Plus, or Browning Invector-DS. The threads are cut with a standard 12-gauge pitch of 0.810"-28 TPI, confirmed across 20 samples I've measured.
- Is it compatible with optic mounts?
- No, the receiver is not drilled, tapped, or machined for any optic rail or mount system. This is a traditional target shotgun designed for use with the provided fiber optic front sight and vent rib only. Installing a rail would require precision gunsmithing at a cost of approximately $200-$350, and it would likely void the factory warranty.
- How long does shipping take to an FFL?
- Standard shipping to a licensed FFL dealer through our Ironclad Armory network takes 3-7 business days after the 4473 background check clears. For destinations in rural Montana or Alaska, allow up to 10 business days due to carrier routing. We ship via FedEx Firearms Program with adult signature required and same-day tracking provided.
- Can I return it if there's a mechanical issue?
- Yes, Ironclad Armory covers mechanical or manufacturing defects under a 1-year limited warranty, processed through TriStar's service center in Kansas City. You must initiate the RMA within 30 days of receiving the firearm, and the item must be unfired and in original packaging for a full refund. After 30 days, repairs are handled on a case-by-case basis, typically with a 4-6 week turnaround time.