Luth-AR AR-15 16" Lo-Drag Bull Upper Receiver Free-Float Handguard
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Starts with the Luth-AR 16″ Lo-Drag, Classic Bull Barrel, made from 4150 CMV with a 1-7″ twist mated to their Lo-Drag flattop receiver which includes the Luth-AR bolt carrier and charging handle. The Free Float version features the Lo-Drag Palm handguard which includes the Luth-AR bolt carrier and charging handle.
Upper Specs:
- 6061-T6 Extruded material
- Hard coat anodize Black
Bolt Specs:
- Bolt: Carpenter 158
- 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:
Lo-Drag Target Crown Bull Barrel 16″
- Available in 16″
- 5.56
- 4150 CMV
- Gas Block Journal Diameter .936
- Gas Tube Length — Carbine
- 1-7 RH Barrel Twist
- 6 Lands and Groves
- M4 Feed Ramp
- Button Broached
- Not chrome lined
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