the SRS A2s come standard with a fast hop-up adjusting system that is compatible with standard AEG hop-up rubbers or you can always opt to use the first-party rubbers directly from Silverback
The rifle has two QD (Quick Detach) points
upgrading GBB require necessary skill & technique
Recommended nozzle length is standard 21
Two-Stage Quick Disconnect: High-quality CNC’d metal fitting for easy retrofitting with PolarStar Filtered QD
VFC Colt Licensed M16A2 GBBR PK403 the SRS A2s come standardThe AR 15 was first designed by Eugene Stoner and L. James Sullivan in 1959, with the rights sold to Colt and advertised as made with modern materials, lightweight, with higher stopping power, and requiring little to no maintenance, the AR 15 was adopted by the United States Military as the M16 in 1964 during the height of the Vietnam War to replace the heavier, more rugged M14 rifle. After the lessons learned from Vietnam, the United States Marine