Rs Reg Full-length Modular Lower Size 5 meaning standard AR height iron

meaning standard AR height iron sights are visible in the lower 1/3 of the red dot optic lens

Dual 4-Digit TSA lock offers advanced security and 10

A higher Optic allows for a more athletic posture and

Outstanding Impact Resistance

Rs Reg Full-length Modular Lower Size 5 meaning standard AR height ironIn 2012" RS Regulate began rolling out the first models of the AK 300 Modular Side Mount System, which now features six fully modular uppers and nine different lowers: a front biased, a rear biased, and a full length lower for most Eastern European AK side rails; a front biased and full length lower for Yugo Serbian rifles; a PSL and and Romanian M10 RH10 rifles; a Century Arms proprietary side rail; and even a rear biased lower for Czech vz. 58s.