The short shield is made to slide under handguard and over the 556 castle bolt, and is attached using a end cap. End cap is attached with two screws inserted in the foremost tac rail holes at the 6:00 and 12:00 positions. Handguard length, length of gas tube, and color specification required. Sprocket end cap will accept barrels up to 0.95″ in diameter. Short shields only work with our Original AR-15 barrel nut and low profile gas blocks.
Pocket length for gas block on short shields are as follows:
Pistol 5.5″ from the face of the upper.
Carbine 8.5″ from the face of the upper.
Mid-Length 10.5″ from the face of the upper.
Rifle length 13.5″ from the face of the upper