SR 15 18-Inch Upper For Sale Online. Build the rifle that fulfills your every need with a KAC SR 15 18 inch upper. This 5.56 MOD 2 M-LOK Knights Armament upper has a direct impingement operating system and features a 1-in-7 stainless steel 18-inch match barrel, KAC Micro sights on a full-length Picatinny rail, and a pre-installed 3 prong flash hider. Weighing in at just under 5 pounds, the Knights Armament SR-15 LPR 18 upper is exactly what you need to build a high-performance weapon suitable for virtually any shooting engagement.

• Fits: SR-15 LPR Mod 2, AR-15
• Barrel Length: 18″
• Barrel Material: Stainless Steel
• Barrel Twist: 1:7
• Caliber: 5.56
• Color: Black
• Front Sight: KAC Micro
• Includes: URX4 M-LOK Handguard
• Mounting System: M-LOK
• Muzzle Device: 3-Prong Flash Eliminator
• Operating System: Direct Impingement
• Overall Length: 27″
• Rear Sight: KAC Micro
• Weight: 4.9 lb