Who Killer Instinct BOSS 405 is for
A solid all-rounder that does nothing badly and nothing outstandingly - a safe pick if the others are out of stock.
What the maker claims
Straight from the manufacturer's own listing, unedited. We have not independently measured these figures - they come from the maker's own listing.
Complete Crossbow Package: Alongside the Boss 405 Crossbow and the Dead Silent Crank, this bundle also includes a Lumix 4x32 IR-W scope, rope cocker, quiver, string suppressors, HYPR Lite bolts, and rail lube, providing everything needed for immediate hunting use in one box, without additional purchases.
405 FPS Crossbow with Compact, Lightweight Frame for Superior Control and Maneuverability: The reduced overall length and micro-lite aluminum barrel combine high-energy output with a balanced design that's easy to carry and handle in the field without sacrificing power or accuracy
6-Position Adjustable Buttstock and X-Lok Foregrip for Customized Fit and Sshooting Stance: Tailor the crossbow to your body size and preferred shooting position, ensuring comfortable handling and consistent shot placement across different hunting scenarios and shooter preferences.
3.5-Pound KillerTech Trigger with Smooth, Crisp release for Enhanced Accuracy and Control: The lightweight trigger mechanism reduces creep and delivers a predictable release, helping you place every shot exactly where intended without disturbing your aim point.
Dead Silent Crank Compact-Narrow LD Sled for 100 percent Silent Cocking Operation: Rapidly attach and detach the integrated crank sled in seconds for completely silent crossbow cocking, reducing vibration and noise that could alert game during critical moments in the field.
This verdict was checked against our published scoring criteria by our editorial team before it went live.
How it stacks up against the other Killer Instinct crossbows here
Three Killer Instinct crossbows made this ranking, and the BOSS 405 sits at the bottom of that trio on score - not because it does anything wrong, but because the Lethal 405HD edges it out on balance and the Burner 415 edges it out on raw speed.
| Model | Rank | Score | Advertised speed | Price |
|---|---|---|---|---|
| Killer Instinct Lethal 405HD | #3 | 8.3 | 405 fps | $$ |
| Killer Instinct Burner 415 | #5 | 8.0 | 415 fps | $$ |
| Killer Instinct BOSS 405 | #6 | 7.9 | 405 fps | $$ |
If you landed here searching for the Killer Instinct Lethal 405 or Lethal 405HD, that is a different bow in the same lineup - see the Killer Instinct Lethal 405HD review for its own data sheet and verdict. The two share the same 405 fps speed rating, but the Lethal 405HD scores higher on what you get (8.5 vs 7.6 here) and on ease of cocking (8.1 vs 8.0); its listed downside is a scope that needs re-sighting out of the box, a complaint that does not appear on the BOSS 405's own list of cons.
Against the Burner 415, the trade is speed for comfort: the Burner is rated 415 fps against the BOSS 405's 405 fps, but its cons list notes more hand shock and louder operation than the rest of the class. The BOSS 405's own sub-scores sit between the other two on accuracy (7.9) and safety (8.2), consistent with its role here - a middle-of-the-road pick, not a standout in either direction.
Where the BOSS 405 earns its keep is availability: when the two higher-ranked Killer Instinct bows in this trio are out of stock, it covers the same 405 fps class without asking for a different accessory budget. It is not the bow to chase on its own merits, but it is a sound fallback if the Lethal 405HD or Burner 415 are not sitting on a shelf.
For the full picture of where the BOSS 405 sits in the lineup, our best Killer Instinct crossbows guide scores all three Killer Instinct bows against each other.