BudsGunShop.com - upper forward assist dust cover

Yes it is Pre-installed forward assist and ejection port door cover
Specifications and Features:
Precision CNC machined from 7075-T6 aluminum alloy ---
Type III hard coat anodized ---
Caliber marked MULTI ---
Bullet pictogram selector markings ---
>>>>>>>>>>Pre-installed forward assist and ejection port door cover ---
Laser engraved T-marks ---
M4 feed ramps ---
Grey

If you are planning to build a new modern sporting rifle, this AR-15 stripped upper and lower receiver set from Spikes Tactical is a great place to start. The lower is the same lower that all Spikes ST-15 LE rifles are built upon and features a prominent Spikes Spider on the left side of the mag well. It is milled from a 7075-T6 forging and has bullet pictograms for the selector markings. The upper is also machined from a 7075-T6 forging, and has laser engraved T-marks and M4 feed ramps cut prior to anodizing.
Specifications and Features:
Precision CNC machined from 7075-T6 aluminum alloy
Type III hard coat anodized
Caliber marked MULTI
Bullet pictogram selector markings
Pre-installed forward assist and ejection port door cover
Laser engraved T-marks
M4 feed ramps
Grey