Founded in 2008 by dedicated firearm enthusiasts, Primary Weapons Systems began by developing high-performance muzzle devices. Through rigorous testing on various rifles, including M4s and AK-47s, they discovered a striking difference in maintenance requirements after sustained high-round use. This insight led to the creation of the PWS long-stroke piston system, preserving the core functionality of the AR-15 while significantly reducing the need for maintenance in high-volume shooting and adverse conditions. The ambidextrous PWS MK1 MOD 2-M Multi-Caliber Lower is expertly crafted from T6 7075 forged aluminum and features a durable anodized finish. Designed for AR-15 compatibility, this lower offers superior durability, reliability and ergonomic enhancements, making it an exceptional choice for demanding shooters. Features an ambidextrous magazine release for easy operation from either side Features an ambidextrous bolt catch for convenient operation from either side A lightweight design ensures effortless carry and improved agility in the field The integrated trigger guard enhances durability and provides a seamless, ergonomic design This model features a Mil-Spec enhanced trigger with a PTFE-coated surface for smooth performance The trigger pull weight is set between 5.5 and 6.5 lb for consistent performance Includes a PWS enhanced buffer tube with a ratchet lock castle nut, end plate set and built-in QD mount for added stability and attachment options Equipped with a PWS enhanced H2 steel body buffer for reduced recoil and reliable performance Outfitted with Bravo Company USA furniture, including a durable buttstock and ergonomic pistol grip for enhanced handling