M4A3 Mil-Contract Stripped Upper Receivers
These receivers are M4A3 mil-contract upper receivers. The finest upper receivers on the market, period.
- Machined from 7075 aluminum forgings
- M4 feed ramps
- Marked 'M4' above gas tube inlet hole
- Hard black-anodized finish
- Milled T-marks
Add on an upper parts kit, complete forward assist and dust cover, and save. We'll install the upper kit for only $10, option available in drop-down menu.
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