Lurking behind the bushes, silent, fast, accurate and poisonous. It's already too late when you see her, consider yourself taken out. SRC's new M4 has been inspired by the second most deadly snake in the world, the black mamba. Like its reptile counterpart, these mambas will make their operators become true hunters, lurking among the trees, bushes and crumbling walls to capture their prey. 1- Folding sights in the purest IPSC style The sights look standard M4's, but when you take a closer look you can see the improvements and that are far more useful, we can use them both either folded or flipped down thanks to its filaments protruding when there is shortage of light, ideal for sunset environments.