Kaiser polymer upper and lower receivers. Half the weight of AL they claim. Hands on experience, durability, failures?
Talk about building a light AR pistol, 4.5 lbs.
https://kaiserus.com/shop/receiver-sets/x-7-lightweight-ar-15-polymer-receiver-set/
https://www.rainierarms.com/kaiser-us-x-7-patrol-lightweight-556-nato-pistol-105/
Talk about building a light AR pistol, 4.5 lbs.
https://kaiserus.com/shop/receiver-sets/x-7-lightweight-ar-15-polymer-receiver-set/
https://www.rainierarms.com/kaiser-us-x-7-patrol-lightweight-556-nato-pistol-105/
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