When ordering barrels I often use to see this choice when choosing what to buy but never really gave it much thought as to what it actually meant, I thought it was just some fancy French word Lol (no renditions please Mol lol)

During my first 5 years of using gear I always used Luer Slip's as I thought why would anyone want to waste time screwing needles on and off the barrel - especially when you over tighten the green used for drawing oil's and it becomes a pig to get off to change it for the needle you want to plunge with.

Then all of a sudden despite heating my barrels up to make the oil thinner I was finding that around 1 in 20 would simply become a Harpoon cannon!! Oh yes - that lovely feeling when the pressure builds too high in the barrel and the needle fires off deep into your arse or quad embedding itself in the nearest vein as you cringe in severe pain whilst you survey all the oil that has blown out all over the bathroom floor!!

So if like me you mix multiple compounds at once you've just lost a load of money's worth in spilt hormones and in 10 seconds time most likely a load of blood as it ejects out of the needle hole. All in all an awful experience.

This is when one realised this is exactly what Luer Locks are for, to make sure this cannot happen. The Lock needles I buy cost three times more just for the screw mechanism on the end but the way I see it is if I am loosing 5 barrels worth out of a hundred then it works out cheaper vs. oil lost and in all honesty I am happy to pay the difference just for piece of mind that the bugger doesn't fly off whilst doing the ab twist pinning glutes Lol

I know there is less need for them if you inject with greens or blues as the oil flows freely as opposed to 25g needles but I prefer the least amount of pain possible when injecting.

Curious to hear what everyone else uses? Do you prefer Lock safety or like to Slip one in ,,,