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- Caliber:
- 5.56x45mm NATO
- Overall Length:
- 27 in
- Barrel Length:
- 18 in
- Barrel Profile:
- Government
- Gas System Length:
- Rifle Length
- Barrel Twist Rate:
- 1-9
- Firearms Threads Per Inch:
- 1/2x28
- Handguard Type:
- Free-Float
- Muzzle Device:
- A2 Flash Hider
- Finish:
- Anodized
- Color:
- Black
- Gun Model:
- AR-15
- Gas Block Journal Size-Diameter:
- .750 in
- Handguard Length:
- 15 in
- Barrel Material:
- 416R Stainless Steel
- Weight:
- 8 lb
Code: 3FN-UFH-AR1518M12-BAA3-M12
MPN: BAA3-M12
UPC: 812058030188
ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.
Made in USA
Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.
Product Info for Luth-AR 5.56 Mark 12 Complete Upper Barrel Receiver Assembly
Starts with Luth-AR 18in, 5.56mm Lightweight barrel made from 4150 Chrome Molly with a 1-9 twist mated to Luth-AR A3 Flattop receiver which includes bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with Luth-AR Lo-profile gas system and ergonomic 15in Palm Handguard with KeyMod slots and a Picatinny top-rail.![]()
Specifications for Luth-AR 5.56 Mark 12 Complete Upper Barrel Receiver Assembly:
| Manufacturer: | Luth-AR |
| Caliber: | 5.56x45mm NATO |
| Overall Length: | 27 in |
| Barrel Length: | 18 in |
| Barrel Profile: | Government |
| Gas System Length: | Rifle Length |
| Barrel Twist Rate: | 1-9 |
| Firearms Threads Per Inch: | 1/2x28 |
| Handguard Type: | Free-Float |
| Muzzle Device: | A2 Flash Hider |
| Finish: | Anodized |
| Color: | Black |
| Gun Model: | AR-15 |
| Fabric/Material: | 4140 Chrome Moly |
| Gas Block Journal Size-Diameter: | .750 in |
| Handguard Length: | 15 in |
| Handguard Style: | Round Rail |
| Gun Rail: | KeyMod |
| Gun Make: | AR Platform |
| Barrel Material: | 416R Stainless Steel |
| Weight: | 8 lb |
| Bolt Carrier Group Included: | MIL-SPEC |
| Charging Handle Included: | MIL-SPEC |
| Magazine Included: | No |
| Country of Origin: | USA |
Features of Luth-AR AR-15 MARK12 Complete Upper Barrel Receiver Assembly
- 18 inch Mark12 Barrel
- 5.56 mm
- 4140 Chrome Moly
- Threaded Barrel - Thread Pitch 1/2 x 28
- 1-9 RH Barrel Twist
- 6 Lands and Groves
- M4 Feed Ramp
- Button Broached
Package Contents:
- Luth-AR 5.56 Mark 12 Complete Upper Barrel Receiver Assembly
Luth-AR 5.56 Mark 12 Complete Upper Barrel Receiver Assembly Orderable Models
List of Orderable Models
- Luth-AR Mark 12 Complete Upper Barrel Receiver Assembly, 5.56 mm, 27in, 18in, Government, Rifle, 1x9, 1/2x28, Picatinny,Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-M12 , MPN: BAA3-M12 , UPC: 812058030188 , Code: 3FN-UFH-AR1518M12-BAA3-M12