The AR-STONER Ejection Port Cover Pin is the answer we have all been waiting for. Have you ever lost the hinge pin snap ring or C-clip when assembling your AR-15 upper receiver? AR-STONER has you covered with the Ejection Port Cover Knurled Pin. The knurling on the end of the pin keeps the pin from sliding to far to the rear, and the handguard blocks it from sliding forward. This simple fix to an age old problem is offered at an affordable price. Get yours today and keep the frustration away!
Note: This is intended for A3 uppers only, will not fit a billet upper receiver.