NcSTAR Front Flip AR-15 Back-Up Sight For Receiver Height Gas Block

NcSTAR Front Flip AR-15 Back-Up Sight For Receiver Height Gas BlockFor a Durable and Compact Flip-Up Front Sight, the NcStar AR-15 Back-Up Folding Front Sight - Receiver Rail Height is the AR-15 Back-Up Front Sight that should equip your AR-15 rifle. This Folding Gun Sight from NcStar is for Handguard Rails, Monolithic Receivers, and Gas Blocks that are at the SAME Level as the AR-15 Receiver Rails (Flat Top). The NcStar AR-15 RECEIVER RAIL HEIGHT BACK-UP FOLDING FRONT SIGHT is manufactured from steel and aluminum and will not melt on your gas block under sustained shooting, unlike other manufacturers' plastic back-up front sights. This NcStar Gun Sight mounts onto Weaver-style and Picatinny rails with a single Allen head bolt for a secure attachment to your receiver. The NcStar Folding Backup Front Sight features a strong, positive Detent System that keeps it in any Position under heavy Activity and Recoil.Features For Handguard Rails, Monolithic Receivers, and Gas Blocks that are at the SAME Level as the AR-15 Receiver Rails (Flat Top). Precision-made Flip-Up A2 Front Sight Post folds down out of view of your optics when not in use. The A2 front sight post is fully adjustable for elevation. With a strong, positive Detent System, the Front Sight Post will stay in any Position under heavy Activity and Recoil. Manufactured from steel and aluminum, they will not melt on your gas block under sustained shooting, unlike other manufacturers' plastic backup front sights. The Compact Flip-Up Front Sight mounts to Weaver-style and Picatinny rails with a single Allen-head bolt for a secure attachment to your receiver. The Allen Head Bolt is more snag-resistant, more compact, and lighter than a Thumb Nut.Specifications Gun Model: AR-15 Construction: Steel and Hard Anodized Aluminum