This is a major rewrite and update to our Practical AEG Upgrade title. A lot of new airsoft technologies are covered.
Lulu order link: https://www.lulu.com/en/us/shop/airsoftpress-/airsoft-aeg-practical-upgrade-maintenance/paperback/product-mmkz69.html
Amazon order link: https://www.amazon.com/dp/B087LB9GBN
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