M4 - Stealth and Grenadier Configurations

# I'm definitely a lot better now. My models are higher quality than before, and they're more detailed# So. Two Low-poly style M4 assault rifles with different configurations: **Stealth Configuration** - featuring a monolithic suppressor providing enhanced effective range and sound suppression at the downside of cost and weight. It also comes equipped with a laser/light module, an early-break trigger and an angled foregrip, as well as a tigher bored barrel for an increased muzzle velocity. **Grenadier Configuration** - An underbarrel grenade launcher, a standard-bore barrel and a muzzle brake, along with the same early-break trigger and laser/light module as its lighter cousin. Standard issue for the Ayren Special Forces, these two variants see extensive use in many deployments.