Just installed - UTG Pro AR15 Mid Length 9in Super Slim Free Float Handguard

Just installed. you MUST have low profile gas block, vice block and barrel nut wrench(4 ur existing barrel nut) to begin. Getting my rifle tore down was the only challenge. once B nut off it was simple;thread on new barrel nut, slide in retaining ring, install new gas block and tube and the hand guard slides right over. Alignment for retaining screws was simple... the retaining ring spins inside the barrel nut and is easy to align, the hand guard "self aligns" because of tabs that go around your upper. put in screws to secure and your done! Awesome product!
Pros: ease of mounting, cost, feel
Cons: none yet, haven't fired rifle.. warned of heat from barrel because of prox to barrel

This review was written in the old system and had content requirements that are different than reviews written today.