Luth-Ar AR-15 11.5'' LIGHTWEIGHT GOV'T PROFILE UPPER RECEIVER 1-7 BA-F11-7

11.5” Government profile Barrel Assy w/F marked FSB and 2 pc Handguard 1-7 Twist

Starts with Luth-AR’s 11.5″ barrel with F Marked Front Sight Base, 5.56 barrel made from 4150 CMV with a 1-7″ twist mated to their A3 Flattop receiver which includes the Luth-AR bolt carrier, charging handle, forward assist and ejection port cover.

Upper Specs:

• 7075-T6 Forging
• Hard coat anodize Black

Bolt Specs:

• Bolt: Carpenter 158 steel
• Extractor: 4140 Alloy steel
• Army Spec Heat Treatment
• Manganese Phosphate

Bolt Carrier Specs:

• Carrier: 8620 steel
• Cam pin: 4340 Alloy steel
• Carrier key: 4130 Alloy steel
• Army Spec Heat Treatment
• Manganese Phosphate

Barrel Specs:

• Government profile 11.5″ w/F marked FSB Barrel

Available in 11.5″

• 5.56 mm
• 4150 CMV (not chrome lined)
• Threaded Barrel — Thread Pitch 1/2 x 28
• Gas Journal Diameter .750
• Gas Tube Length — Carbine
• 1-7 RH Barrel Twist
• 6 Lands and Groves
• M4 Feed Ramp
• Button Broached
• Not chrome lined