Anyone know much about these?

http://store.botachtactical.com/kz4ha.html

KZ 4-Rail Handgauard

2 piece handguard is designed to replace your standard plastic handguard with our 4 rail Picatinny design. Simply remove your existing handguard panels and insert these in their place. No gunsmithing required. Made from lightweight 6061 aircraft grade aluminum and type 2 class III hardcoat anodized.

The bottom rail removes easily to accommodate accessories such as grenade launchers, flare launchers and shotguns.

   * 4 sided Picatinny rail system
   * Type 2 class III Hardcoat Anodized.
   * 6061 Aircraft Grade Alumium
   * No gunsmithing required, handguards mounts just like factory handguards.




KZ-4RpadPrice: $69.95padSale Price: $59.95pad
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