The 49ers lost leading wideout Michael Crabtree to a torn right Achilles tendon for up to six months. That’s roughly Thanksgiving for those needing perspective.

It occurred on a basic seven-on-seven drill during organized team activities last week. Injuries happen every day in the game of football. Ones that take place during non-contact drills, well, are simply all the more frustrating.

The obvious and pertinent question, then, is can San Francisco overcome such a devastating injury to its No. 1 receiver?

Even with Crabtree being Colin Kaepernick’s most trusted target, it may not be as difficult as one would think.

Here are the top reasons why the 49ers passing attack will recover just fine without Crabtree.

Note: This article will explore the passing game only. The 49ers top-three worthy ground attack and defense are two other noteworthy reasons for a positive conclusion.

Problematic, but Deep Receiving Corps

Describing a receiving corps as problematic would seem as, for lack of a better word, problematic.

But that’s really just surface level analysis.

Anquan Boldin arrives for his first year in San Francisco after spending the previous 10 seasons with the Arizona Cardinals and Baltimore Ravens. The veteran, tough-as-nails receiver has accumulated 772 receptions for 10,165 yards and 79 touchdowns.

Boldin also produced his third-highest career average per catch last year (14.2) and nearly 1,000 yards (921). This bodes well for the 32-year-old’s new team.

Some would say, though, that establishing rapport with Kaepernick will not develop until well into the season. Learning the playbook and gelling with his fellow wideouts could also take an extensive period of time.

However, the savvy vet and consistently well-loved teammate has already made his presence known in 49er land, including fostering a productive relationship with Kaepernick (h/t ESPN.com). Not bad for the 49ers new No. 1.

Outside of Boldin, the 49ers have Mario Manningham, Kyle Williams, A.J. Jenkins, Ricardo Lockette and fourth-round pick Quinton Patton.

Both Manningham and Williams return following separate knee injuries in 2012. Williams is a lock for Week 1, but the former could begin the season on the PUP list. If both receivers do come back in September, the 49ers have a quality top-three on their WR depth chart.

Last year’s first-round pick, Jenkins essentially spent 2012 red-shirting—digesting the playbook, studying film and building up more strength. Fans of the Red and Gold should rest assured knowing how well this franchise develops key players behind the scenes (see: Alex Boone, LaMichael James, Kaepernick).

Finally, Lockette has all the physical measurables at 6’2’’, 211 pounds with 4.30 speed. He also averaged a whopping 52.5-yards-per-catch with one touchdown for his two career receptions (for what it’s worth). Patton, for his part, destroyed the competition at the NCAA ranks and is an NFL-ready route-runner with excellent hands.

Double Tight End Factor

The NFL is rapidly becoming an offensive aerial assault with teams featuring multiple tight-end sets.

Rob Gronkowski and Aaron Hernandez, newly formed Jermaine Gresham and Tyler Eifert in Cincinnati and other squads with dynamic weapons such as Jimmy Graham, Jason Witten and Tony Gonzalez are prime examples.

The 49ers are another such team under Jim Harbaugh and offensive coordinator Greg Roman. These two have been masterly utilizing the tight end position since their days at Stanford.

San Francisco’s dual set last season materialized in Vernon Davis and Delanie Walker. The former is widely considered the most gifted tight end and biggest creator of mismatches against linebackers and safeties. Walker is an excellent blocker and athletic jack-of-all-trades, but unfortunately finds himself with the Tennessee Titans.

Here is where a couple hypothetical positives enter the picture.

Davis shone brightly on occasion with Kaepernick as his quarterback. He hauled in six passes for 83 yards and one touchdown in Kap’s first NFL start in Week 11 against the Bears. He then grabbed five catches, a score and a season-high 106 yards against the Falcons during the NFC Championship Game.

Problem is—Davis totaled all of seven receptions for 105 yards in the seven games in between. He even garnered not one single target when matched up with the New Orleans Saints.

So if the Bears, Falcons and Super Bowl matchup against the Baltimore Ravens (six catches, 104 yards) are any indication, then the Kaepernick-to-Davis connection will be quite the prolific one in 2013. We believe it will.

Replacing the valuable Walker is second-round selection Vance McDonald.

McDonald is another physical specimen at 6’4’’, 267 pounds with 4.60 speed. The former Rice tight end possesses high football IQ and is extremely versatile. He lined up in-line, out wide, in the slot and as an H-back while in college. Only his blocking is not quite up to par with Walker’s.

McDonald displayed his abilities as a pass-catcher with 40-plus receptions, eight touchdowns and over 500 yards during three different individual seasons. Rice certainly wasn’t much of a pass-first team offensively either.

Contingent on his notable talent, high-round status (No. 55 overall) and 49ers’ knack for identifying quality prospects at the position, McDonald should pair with Davis for a widely effective tight-end combo in the passing game.

Unknown factor or not, we believe the positive will emerge in this case as well.

Crabtree’s loss is a tough pill to swallow. The 49ers, though, are fundamentally built to rebound in stride.

Follow me on Twitter @jlevitt16