“Aggressive JAWS grooves with a 37-degree groove-in-groove. Steel-dominant players' wedge; a common current-bag choice.”

The fifth generation of Roger Cleveland's Mack Daddy line, launched September 2019 as 'JAWS MD5' — the point where Callaway leaned fully into groove aggression as the wedge's identity. The headline change was a sharper groove-wall angle (37 degrees, versus roughly 5 in the MD4) plus 'groove-in-groove' technology: micro-ridges milled between the main grooves add extra contact points across the face to bite the ball on partial and open-face shots. Cast from 8620 mild carbon steel with tour-shaped, progressively sized heads, it shipped in five sole grinds (S, C, W, X, and a low-bounce option) across lofts from 46 to 64 degrees, positioned as a spin-max tour wedge rather than a forgiveness club.

A well-regarded, high-volume tour wedge that reviewers (Plugged In Golf, Today's Golfer, Golfalot) consistently rated among the grippiest of its generation, and it saw wide PGA Tour play — but it is a mainstream OEM wedge on a two-year refresh cycle, not a scarce or reverently hunted object. It was superseded by JAWS Raw in 2022 and is now simply a strong used-market value, so 'notable' rather than cult.

Low-to-mid handicaps and better ball-strikers who open the face, hit varied trajectories, and want maximum greenside spin and grind choice. Grind selection matters: S-grind for neutral/steep-ish attack, C/X for shot-shapers who open it, W for steeper diggers, low-bounce for firm turf. A higher handicap wanting easy, get-it-close chipping is better served by the sibling CB cavity wedge.

• Groove walls milled at a 37-degree angle versus roughly 5 degrees on the MD4, the core change credited by Callaway and reviewers for a measured spin gain (Callaway cited around 500 rpm / 11% in testing, with a ~1-degree lower launch).
• 'Groove-in-groove' adds micro-ridges between the primary grooves — Callaway described 84 contact points — specifically to grip on open-face and partial shots.
• Cast from 8620 mild carbon steel with tungsten weighting on select heads, offered in Platinum Chrome and Tour Grey finishes at $159.99 each.
• Five sole grinds (S, C, W, X, plus low-bounce) across lofts 46-64 degrees; stock shafts were True Temper Dynamic Gold Tour Issue 115 (steel) or Project X Catalyst 80 (graphite).
• Designed by Callaway Chief Wedge Designer Roger Cleveland — the same designer behind the Cleveland wedges and the 1990s Cleveland VAS/Tour Action lines.

Launched into the 2019-2020 spin-wedge arms race against Titleist Vokey SM8, TaylorMade MG2/Hi-Toe, and Cleveland's own RTX 4 — all chasing groove sharpness within the USGA's conforming limits. It followed the MD4 (2017) and was itself replaced by JAWS Raw (2022), which took the same groove geometry and removed the face plating to push spin further. The modern equivalent in Callaway's line is the JAWS Raw / Opus series.

Realistic 2026 private-party value is roughly $50-95 for a clean single wedge (eBay/SidelineSwap), driven down by grip and groove wear since grooves are the whole point of the club. Reconditioned-retail listings (Callaway Golf Pre-Owned, 2nd Swing, Golf Avenue) run higher — commonly $80-130 graded/warrantied — which overstates what a private seller actually gets. Worn grooves should knock 30-40% off; specialty grinds (X, low-bounce) in clean shape hold value best.