The DD MK18 Upper: A CQB Powerhouse
The Daniel Defense (DD) MK18 upper receiver is a renowned ingredient within the AR-15 platform, known for its close-quarters beat (CQB) prowess. At first designed for USSOCOM (Usa Exclusive Operations Command), the MK18 upper has become a sought-following choice for both Specialist and civilian AR-15 enthusiasts on account of its reliability, maneu