Brownells A1 Ejection Port Cover Assembly Features The Brownells A1 Ejection Port Cover Assembly reproduces the correct-spec smaller rectangular finger pad with crisp 90-degree edges found on genuine M16A1 and earlier rifles distinguishing it visibly from the rounded A2 cover used on modern AR-15s. Internally it uses an early-style hexagonal housing to retain the catch detent and spring matching the original design rather than the simpler cylindrical housing found on later A2 covers. Despite these period-correct details the cover operates and installs exactly like modern ejection port covers requiring no special modification to fit. It is made of stamped steel rather than plastic staying true to the original military specification. A matte dark gray Parkerized finish gives the cover a durable corrosion-resistant surface that closely matches the look of Brownells Retro Rifle receivers and other period-correct parts. Note that the pin C-clips and spring are not included and must be sourced separately to complete the installation. For builders who have invested in assembling an accurate early AR-15 or M16 retro rifle this cover provides the finishing touch of historical authenticity that a modern A2 cover would compromise. It is a purpose-built part for retro rifle projects seeking correct period detail. Brownells A1 Ejection Port Cover Assembly Specifications Brand: Brownells Compatible Hosts: AR-15 M16A1 Material: Steel Finish: Parkerized Color: Black Available At: GrabAGun