Full cavity inspiration
The MP-57 (Project X Rifle Steel Shaft) breaks all iron preconceptions. A full cavity Grain Flow Forged design, compacted into an inspiring overhead profile, for both forgiveness and great shot-making. Designed in conjunction with professionals on both US and European PGA Tours, the MP-57's delivers a 7% larger sweet area (than the MP-60), from a clubface just 2.5% larger. Both sole width and offset graduate through the set, offering greater forgiveness in the long irons, and more workability in the shorter irons. Custom Fit options ensure that the MP-57 can be enjoyed by both tour professionals and mid handicap amateurs.
Features:
- Full cavity design
- Largest sweet area of all MP irons
- Impact Muscle Pad
- Ideally placed to maintain solid feel
- Grain Flow Forged™, 1025E "Pure Select" mild carbon steel
- Provides soft, solid, feel and distance control
- Cut Muscle™ design
- Manipulates weighting for trajectory, feel, and control
- Double nickel chrome plated
- Polished looks and durability
- Forged U-grooves
- For optimum spin and control
- Tour preferred sole
- Rolled edges and cambered mid-sole for pure ball striking
PROJECT X RIFLE (5.5) SHAFT

| Model | Left Handed | Loft | Lie | Offset | Bounce | Length | Swing Weight |
| 3 | Yes | 21° | 59.5° | 0.161" | 1° | 38.75" | D1-D3 |
| 4 | Yes | 24° | 60° | 0.154" | 1° | 38.25" | D1-D3 |
| 5 | Yes | 27° | 60.5° | 0.146 | 2° | 37.75" | D1-D3 |
| 6 | Yes | 31° | 61° | 0.138" | 2° | 37.25" | D1-D3 |
| 7 | Yes | 35° | 61.5° | 0.130" | 3° | 36.75" | D1-D3 |
| 8 | Yes | 39° | 62° | 0.126" | 4° | 36.25" | D1-D3 |
| 9 | Yes | 43° | 62.5° | 0.114" | 5° | 35.75" | D1-D3 |
| PW | Yes | 47° | 63° | 0.114" | 6° | 35.50" | D2-D4 |