2026 Bullet Premium310RES

The Bullet Premium 310RES is a rear-entertainment/living layout with three slides, a kitchen island and two awnings — a 35-foot travel trailer aimed at couples who want a large, residential half-ton-towable trailer. Bullet Premium extends the Bullet build to longer, triple-slide floorplans with the openness of a much larger fifth wheel.

It carries the Bullet Premium build — vacuum-laminated sidewalls, an aerodynamic radius front cap, a walkable roof and an enclosed, heated underbelly on longer floorplans, on tandem axles. At 8,300 pounds dry against a 10,585-pound GVWR it leaves 2,285 pounds of cargo capacity, and the dry tongue weight is 1,030 pounds. A 10 cu ft refrigerator and 15K BTU* air conditioning round out the equipment.

A figure worth stating plainly: Dry weight is derived from GVWR minus the RVUSA cargo capacity (2,285 lb) and flagged; confirm against the unit's sticker. As with every lightweight trailer, the published tongue weight is a pre-production dry estimate — once water, gear and passengers are aboard, real loaded tongue weight runs higher and lands on the tow vehicle's payload, so weigh the loaded trailer and match it to your truck honestly before relying on the brochure number. For couples who want a large, residential half-ton-towable trailer, the 310RES is a well-targeted pick within the Keystone value stack.

Keystone's Bullet spans the lightweight aerodynamic Bullet Classic (single- and dual-axle small trailers) and the larger half-ton Bullet Premium floorplans. The plan on this page is highlighted; each profiled plan links to its own page. The full Bullet catalog runs to dozens of floorplans — the highest-demand layouts are detailed here and the rest are catalogued on the Bullet hub.

This floorplan carries its water comfortably. A full 54-gallon fresh tank is roughly 20% of the 2,285-pound cargo capacity, leaving the 310RES with a usable gear budget even when you tow full.

The published dry tongue weight of 1,030 pounds is 12% of the 8,300-pound dry weight, which sits inside the 10–15% band usually quoted for stable towing. It is still a dry figure: loading the front pass-through and the fresh tank both push it up.

Nothing above changes the ceiling. Loaded to its 10,585-pound GVWR the 310RES is towing 2,285 pounds more than its 8,300-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 54 gallons of fresh against 76 grey and 38 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Of the 5 Bullet floorplans profiled here, the 310RES carries the highest GVWR at 10,585 pounds. It is the top of the line by weight, which makes tow-vehicle capability the first thing to settle rather than the last.

Either side of it in the same line: Bullet 2640BH is 3,185 pounds lighter at 7,400 lb GVWR.

Against the 310RES: the Passport 3300BK is 14 lb lighter and 2 ft longer and sleeps 5 more; the Jay Flight 325BHT is 15 lb heavier and 2 ft longer and sleeps 6 more; the Aurora 34BHTS is 67 lb heavier and 2 ft longer and sleeps 1 more. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.

Those are the nearest travel trailers from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.

For scale, the Bullet floorplans profiled here run 3,490 to 8,300 pounds dry and 22 to 36 feet of exterior length across 5 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.

Every profiled floorplan in this line, with the full weight table, is on the Bullet line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 15 of them for the 310RES. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.

Not published for this floorplan: exterior width, interior height, tire specification. If you find one of these in a manufacturer document for this plan, it belongs on this page.

The completeness figure at the foot of this page (86%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.

Values on this page carrying an asterisk were derived by arithmetic from published figures, or come from a single source, rather than being printed directly by the manufacturer. The flag travels with the number into the downloadable spec sheet.

How every figure here was sourced and checked is set out on the methodology page.