.50 Caliber

.50 Caliber

Pre-Workout Devastation
Supports Explosive Energy, Strength, & Pumps*
8.1  out of 10  (41 Reviews)
1 Size
30 Servings
Choose a Size
{{group.violatorText}} {{group.name}}
2 Flavors
Orange Pineapple
Choose a Flavor
Flavor Rating: {{sku.flavorRating | flavorRating}}
Was:  {{vm.group.strikePriceDisplay}}
Price: $29.99  ($1.00 / Serving)
Flavor Rating: 6.8

Product Overview


This is .50 Caliber®. A hard hitting, 4-phase energy complex and pre-workout devastator designed to make every workout an explosive, energy fueled assault. Loaded with scientifically backed ingredients in high doses, .50 Caliber helps to amplify Energy, Pump and Strength*, and deliver unparalleled power and enhanced focus*.

50 Caliber is a completely revolutionized formula with no proprietary blend and is designed for hard training individuals who are serious about performance and results.






  • 4 phase energy complex*
  • amplified focus*
  • no proprietary blend


Pure L-Citrulline
Many other pre-workout products on the market today use a blended Citrulline, known as L-Citrulline Malate. Although the benefits of Citrulline are undeniable, this form only delivers a percentage of the stated benefit of Citrulline. .50 Caliber is different, formulated using only free form PURE 4000mg dose of L-Citrulline! A recent study demonstrated that pure L-Citrulline supplementation improves the ammonia recycling process, nitric oxide metabolism and vascular blood flow levels resulting in improved muscular performance.*

CarnoSyn Beta-Alanine
As the name suggests, CarnoSyn® Beta-Alanine is important for carnosine synthesis. Beta-Alanine is an amino acid that bonds with histidine to support an increase in muscle carnosine. Elevated muscle carnosine levels have been shown to:

  • Extend muscular Endurance*
  • Combat the buildup of lactic acid, which leads to improved endurance and reduced muscle fatigue*
  • Build muscle strength*
  • Enhance peak performance capabilities*

Creatine Hydrochloride (HCL)
Creatine remains one of the best and most well researched ingredients within sports and athletic performance. It has been shown to support significant gains in muscle strength, power and growth.*

Creatine Hydrochloride (Creatine HCl) is a form of Creatine where hydrochloric acid groups are then bound to Creatine molecules. Adding the HCL group actively lowers the pH of Creatine, making it more acidic. This increase in acidity improves its solubility in fluids, which in turn increases its absorption within the body.


No stimulatory or energy supplement would be the same without the addition of Caffeine. Not only is .50 Caliber loaded with 300mg of high impact Caffeine Anhydrous, but also two additional forms: Infinergy™ (DiCaffeine Malate) and PurCaf™.

Infinergy™ is a precise combination of Caffeine and Malic Acid as an ionic bonded compound. By combining the well-established properties of Caffeine and Malic Acid, Infinergy™ offers sustained release energy, extending the stimulatory effects of Caffeine. PurCaf is an organic Caffeine that is 90.5% pure Caffeine extract from green coffee.

Advantra Z™ (30% P-Synephrine)Known most commonly for its ability to increase resting metabolic rate and therefore, effective in supporting weight loss and the reduction of body fat* - .50 Caliber has been formulated with the mindset to not only amplify your workout but assist in utilizing body fat during training or exercise.*

Advantra Z®, over many other different forms of P-Synephrine has been shown to stimulate beta-3 cell receptors with minimal impact on alpha 1,2 and beta 1,2 receptors, which means, Advantra Z increases the metabolic rate (thermogenesis) without affecting heart rate or blood pressure.*

This complete synergistic blend of caffeine and Advantra Z supports increases in muscle strength, improved muscular endurance and decreases muscle fatigue during workouts, taking your training intensity to the next level*.


Fundamental to the unique .50 Caliber® formulation is its tri-phased Mind-Muscle Profile. As the initial ingredients are absorbed, the following compounds break the blood brain barrier, enhancing the effect and benefits further, resulting in an amazing cognitive support:*

L-Theanine: 50mg
Reduces stress effects and supports alertness and attention.*

Higenamine Hydrochloride (HCL) : 50mg
Stimulates muscle tissue to contract, improving athletic performance.*

Huperzine A (Huperzia serrata): 50mcg
A cognitive enhancer that promotes alertness.*


4000mg Pure Citrulline 2000mg L-Citrulliine (1000mg
active Citrulline)
NO NO Listed as proprietary blend
Caffeine Blend: Infinergy
(DICaffeine Malate) &
Caffeine Anhydrous
Caffeine Anhydrous
NO Caffeine Anhydrous
Creatine Source:
Creatine HCL
Creatine Monohydrate Creatine blend
HCL not included

Creatine blend, HCL
not included
Creatine HCL
Mind-Muscle Focus Blend:
Higenamine, Theanine
& Huperzine-A
NO Alpha GPC Higenamine only, listed
as proprietary blend
CarnoSyn Beta-Alanine
Beta Alanine 2100mg Beta Alanine
NO Beta Alanine 2500mg



8-10 OZ

Mix 1 serving of .50 Caliber (2 scoops, 10 grams) into 8-10 oz of ice cold water. Consume .50 Caliber approximately 30 minutes before training.


.50 Caliber isn’t just about using scientifically-backed ingredients and dosages to amplify your training and athletic performance, it also has an irresistible, refreshing taste. This means you’ll actually look forward to drinking your pre-workout!



Pure L-Citrulline: 4000mg
L-Citrulline promotes aerobic energy production in human exercising muscle.
L-Citrulline increases ornithine and arginine plasma content, resulting in improving the ammonia recycling process and nitric oxide metabolism. It also increases blood flow after a prolonged supplementation of 4000mg pre exercise performance.

CarnoSyn beta-alanine: 2000mg
Beta Alanine increases muscle strength and increases the working capacity of muscle.

Creatine Hydrochloride (HCL): 1500mg
Long-term Creatine supplementation improves muscular performance during resistance training. Creatine supports significant gains in muscle strength and power, as well as muscle growth.*


Caffeine Anhydrous: 300mg
Caffeine is a powerful stimulant, and it can be used to improve physical strength and endurance.* It is classified as a Nootropic because it sensitizes neurons and provides mental stimulation.

Advantra Z (30% P-Synephrine): 60mg
Naturally occurring P-Synephrine in Advantra Z exhibits powerful physiological activity.

Infinergy (DiCaffeine Malate): 50mg
Precisely engineered, Infinergy™ delivers a true, ionic bond of Caffeine & Malic Acid. Optimizes energy levels while promoting mental focus.* HPLC verified for purity.

PurCaf Organic Caffeine: 50mg

  • 90.5% Pure botanical caffeine from green coffee
  • Certified Organic (USDA & ECO-CERT)
  • Non-GMO plant-based energy


L-Theanine: 50mg

  • Naturally occurring amino acid in the body, that helps transmit nerve impulses in the brain.
  • May also have effects on the cardiovascular system.

Higenamine Hydrochloride (HCL): 50mg
Higenamine is known as a Beta-adrenergic receptor agonist. It may help support healthy body composition.*

Huperzine A (Huperzia serrata): 50mcg
Used for supporting alertness and energy. Also causes an increase in the levels of acetylcholine, one of the chemicals nerves use to communicate in the brain and is involved in muscle contraction.*

Model Lifting

Ratings & Reviews

Overall Rating
41 Ratings
Verified Buyer Rating
19 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
Wild Punch
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Verified Buyer

Was a little skeptical of the flavor but as soon as you drink it, your mouth feels like your chewing big red chewing gum. I love it and the focus and intensity is one of the better ones out there. Great product, would gladly buy again.

Verified Buyer
  • 10 Wild Punch

Solid ingredients and not underdosed like most of the top pre workouts on this site. Very underrated pre workout.


WOW. I got the grenade shaker bottle quite some time ago. Didn't realize it was a supplement company at first. Then I stumbled upon this pre-workout. The taste is great if you like fireball the alcoholic drink. I took one sip and was feeling the power. I also felt better focus when I was working out. I was sitting down and drinking this pre and then stood up and got the feeling of amazing energy. This may be one of the best pre-workouts I have taken period. Go grab a grenade shaker and some .50 caliber and feel the explosion!

Verified Buyer

Works great and tastes amazing. Great mix ability and gives an awesome pump if you can get it on sale buy it!!!! Ingredients are great and actually clinically proven unlike most PREs out there

Verified Buyer
  • 8 Wild Punch

This preworkout has a really good energy matrix that lasts the whole workout and has 4 G of citrulline for pump to add to its greatness. I only rated it an 8 because it only has one pump agent as opposed to adding arginine or Agmatine sulfate which studies show give the best results when mixed. The difference in blood flow and volume can be felt

  • 8 Orange Pineapple

This pre-workout is intense to say the least. I have a full review on my website, if you'd like to check it out. meghanmuncy.weebly.com

Verified Buyer

Have only used this once so far, but holy hell what a shoulder pump! I've never seen my delts pumped like that before and felt amazing too. The fireball flavor was really good and a welcome change from the same flavors you see everywhere. I used the recommended two scoop dose and had a great workout, will probably try three scoops next time to see if I get a better energy boost. All in all I was impressed after the first use.


I really don't know how this flavor is rated a 9.6. It felt like I was drinking watered down big red chewing gum. I think I will stick to the fruity flavors because this pre workout is tough to get down. On the upside however, it did provide great focus and energy in the gym.

Verified Buyer

Didn't care too much for the flavor, but the pump and workout I was able to have because of it was beyond my expectations. It came all caked together with lumps, but still worked well. I would like to try the fireball flavor. I would buy this again!

  • 9 Wild Punch

working great so far, powerful pre-workout.

Verified Buyer
  • 9 Orange Pineapple
  • 10 Wild Punch

I originally have tried the Orange Pineapple and loved it. It kind of reminded me of Cactus Cooler Soda which I liked as a kid. I had tried a sample of the FIREBALL at a demo at my local gym and was amazed at how awesome the taste was! However, every time I went into my local Supp shop it was sold out. So I decided to get it online at BB.com and it is an amazing flavor. Top Notch pump and got me through my tough days working out (Lot's of pyramid training) Next purchase for me will be their Defend BCAA

Verified Buyer

This is a great performance based Pre Workout, No crash, nice clean energy. Aesome mental clarity and mind muscle connection . The best part of the product is the great pump from the 4g of pure citrulline !! And cant go wrong with FIREBALL flavor, no one makes one even close to this.

  • 9 Orange Pineapple

LOVE Grenade! .50 Caliber is the Best pre workout I have used! Taste is great! Totally worth it! Bought 3 months worth and am making massive gainz! Totally gets me pumped up and gives me energy. Might need to try the other flavors although I totally love the Fireball, it's a nice change from all the typical flavors out there!!!

  • 9 Orange Pineapple
  • 8 Wild Punch

This is absolutely a solid Pre. It hits hard, clean taste and the process per serving is awesome. When I first got the .50 cal I was not aware that it was a 2 scoop dose. I am a huge fan, because some days I don't want the full kick of the stims, so I take a scoop and a half. I have tried many pre-workouts and this certainly makes it into my top 5 of all time and that's putting it up against the old jack3d formula before it got banned.

  • 10 Orange Pineapple

Great pre! I work out early in the morning, so the high stim keeps me going all day long. I love the flavors too. Orange Pineapple is my go-to. Tastes great by itself, but I prefer to mix with the small size bottle of orange Gatorade for pre-carbs. Fireball is actually really good. It's sweet and tastes just like cinnamon candy. It's a great change up compared to most pre flavors.

30 Servings
30 Servings
$1.00 Per Serving

What's in Grenade .50 Caliber

30 Servings Orange Pineapple
Serving Size: 2 Scoops (10g)
Servings Per Container: 30
Amount Per Serving Daily Values **
Calories 0       
Total Carbohydrate 1 g <1%
Sugars 0 g
Niacin 5 mg 25%
Vitamin B6 .5 mg 25%
Pure L-Citrulline 4,000 mg
CarnoSyn® (Beta-Alanine) 2,000 mg
Creatine Hydrochloride (HCL) 1,500 mg
Caffeine Anhydrous 300 mg
Advantra Z® (30% Synephrine) 60 mg
Infinergy™ (DiCaffeine Malate) 50 mg
PurCaf™ Organic Caffeine 50 mg
L-Theanine 50 mg
Higenamine Hydrochloride (HCL) 50 mg
Huperzine A (Huperzia serrata) 50 mcg
** Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
† Daily Percent Value not established.
Natural and Artificial Flavors, Citric Acid, Silicon Dioxide, Calcium Silicate, Sucralose, Acesulfame Potassium (Ace-K), Malic Acid, FD&C Yellow #5
ALLERGEN WARNING: NONE. Made in a GMP facility on equipment that processes dairy, soy, eggs, peanuts, tree nuts, fish, shellfish and wheat.

Warnings: Consult an appropriate, qualified health care practitioner before use if you are on any medication, if you have any pre-existing medical condition(s), or are taking an MAO inhibitor or any other prescription drug(s). This product may cause mild skin tingling. Don’t use this product if you are pregnant or nursing. Discontinue use and consult a physician immediately if any adverse reaction is experienced. To be used by healthy adults only (21 years of age and older) as part of a proper diet and exercise program. USERS ASSUME ALL RISKS, consequences, and liabilities relating to the use of this product in any way. Keep out of reach of children and store in a cool, dry place away from strong light and odors. CAUTION: This product contains caffeine and other stimulants. Do not take this product less than 5 hours before you intend to sleep.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Check out other Improve Workout Products.