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Mast Prop 100

Mast Prop 100


On Armor
Drostanolone Propionate 100mg/ml
10ml Vial

Mast Prop is a firm favourite with competitive bodybuilders, physique athletes and fighters around the globe. It will produce a hard, vascular look to the muscle and will help cut excess fat levels, should be used in conjunction with a deficit "cutting diet". During such a diet Mast PROP will ensure muscle and strength are retained.  


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Mast Prop

ONARMOR facts, about using Mast Prop 100mg

General Description

ALL On Armor injection Oils are adapted to incorporate a pH balanced formula that should reduce/eliminate pain at the point of injection.  

Mast is the common name given to all Drostanolone hormone products, because of the original trade name that was given to the product when it was invented. An effective component of a cutting cycle, Mast is especially good for those who want that “lean extreme” look. Using Mast whilst in the latter stages of a cutting diet and training regime will ensure the “drying out” process and produce a hard, vascular finish to the muscle definition. For the physique athlete using Mast Prop or Enan will help him lose that last bit of stubborn fat that can often be hard to shift even with the best of diet plans and increased cardio. It will ensure the hardest looking physique. Mast is also used within a cycle as an anti-estrogen.

Structural Characteristics:

MAST PROP is a dihydrotestosterone (DHT) anabolic steroid that has been structurally altered by the addition of a methyl group at the carbon 2 position, This protects the hormone from the metabolic breakdown by the 3-hydroxysteroid dehydrogenase enzyme, which is found in the skeletal muscle. It also greatly increases the hormone’s anabolic nature.

Cutting through the Jargon, what is it like in practice?

The finest cutting characteristics of MAST PROP will only really be truly appreciated by individuals that are already lean, but looking for that extreme lean look with complete muscle hardness. This is why the hormone will most commonly be found at the end of bodybuilding contest prep cycles as the individual should already be fairly lean at this stage. However it can be used by other athletes, but the results will be less apparent. Either way – it is best to consider this a product reserved for cutting phases.

MAST PROP has quite a low anabolic and androgenic rating. However, MAST PROP is very androgenic in reality (so you can, and probably will suffer some androgenic side effects). MAST PROP is five times more androgenic than testosterone with a much stronger binding affinity to the androgen receptor. The use of MAST PROP will:

·        Provide a harder look to the muscle

·        Enhance Fat loss

·        Encourage the breakdown of areas of stubborn fat and fat deposits.

·        Significant gains in Strength


MAST PROP is a brilliant androgen for the MMA, boxing or martial artist who is looking for a significant gain in strength whilst following a calorie restricted diet in an effort to maintain a specific bodyweight necessary for his pursuit. These types of athlete could enjoyincreases in strength and a slight improvement in recovery and muscular endurance without unwanted body weight gain.


ONARMOR MAST PROP is dosed at 100mg/ml.

We would suggest a MAST PROP dose of 300-400mg per week as part of a bigger stack of products and part of the cutting stage. Some may choose to split their dose up into a daily injection schedule, but every other day should suffice.

Please note: all ONARMOR products are exactly dosed and may exceed the dosages experienced with other similar products by other manufacturers. We would suggest starting at a lower dosage and increasing steadily throughout the weekly course. Should you experience any adverse side effects at higher dosages this will allow you to “back off” the dosage down to a level that you are ok with.

Note: good, hygienic, injection practice should be applied at all times. All sites should be clean (it is a good practice to carry out administration after showering or taking a bath) and should be treated with a wipe. Do not attempt to use previously used equipment or share equipment. It is good practices to have someone else, responsibly, administer injections.


MAST PROP will be incorporated into a cutting stack. We would not consider as part of any bulking stack or general mass building program.   

Cutting Stack Products:

  • Test Prop
  • Tren Ace
  • Trestolone
  • Anavar
  • Winstrol
  • Primo
  • HGH
  • Clen

ON Armor
16 Items

Data sheet

Pharmaceutical Ingredients
Drostanolone Propionate 100mg/ml

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