LR-308 Rifle Kit - 18” Parkerized, SOCOM Barrel, 1:10 Twist Rate with 15” M-Lok Handguard

Gain confidence in your .308 shooting. You'll take comfort in knowing this LR-308 build kit is reliable and will stand up to a hard day at the range or your next hunting trip. You get a prebuilt upper assembly comprised of an 18-inch SOCOM mid-weight barrel made of 4150 chrome moly vanadium steel paired with a 15-inch M-Lok handguard. Buy and finish your 80% lower with a jig, assemble your rifle, and mount your favorite backup sights, scope, or other optics. Then just get some mags and ammo, and you're all set. Get this kit and introduce a strong new go-to .308 rifle to your AR collection.

What’s Included

This kit is not a firearm. It includes an assembled upper receiver, bolt carrier group, lower parts kit, and buffer assembly with buttstock. It does not include the component to make a firearm: A stripped lower receiver. Pair this rifle kit with an AR-10/LR-308 80% lower receiver and AR-10/LR-308 jig to fabricate a receiver, sold separately.

New builder? This guide explains 80 percent lowers.

LR-308 Rifle Kit Specs

Barreled uppers are assembled in-house before shipment.

Barrel

• Chamber: .308 Winchester
• Contour: SOCOM
• Length: 18”
• Twist Rate: 1:8
• Gas System: Mid-length
• Gas Block Dia.: 0.750”
• Muzzle Threads: 5/8x24
• Material: 4150 CMV
• Finish: Parkerized
• Process: Button Rifled
• Lining: None
• Extension: .30-Cal
• Muzzle: Twisted Flash Hider

Handguard

• Attachment System: 15" M-Lok
• Finish: Type III Hardcoat Anodized (Mil-Spec)
• Top Rail: M1913 Picatinny
• Material: Billet 6061-T6 Aluminum
• Attachment: Barrel Nut 

Stripped Upper Receiver

• Profile: LR-308 M4-Style Flattop
• Material: Forged 7075-T6 Aluminum
• Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

• Profile: M16/Full-Auto
• Steel: Carpenter No. 158 (Mil-Spec)
• Exterior: Phosphate Coating
• Interior: Chrome-Lined
• Gas Key: Staked, Chromed
• Charging Handle: Included

Lower Receiver Parts

• Buffer System: .308 "Shorty" Buffer
• Buttstock: Mil-spec, M4-type
• Parts Kit: Mil-spec, single-stage

Receiver sold separately

No FFL or serialization is required to fabricate a receiver under federal law. However, state laws vary. Some states require serialization or have banned 80% lowers and gun-making kits. We encourage each and every builder to perform their own research about the state and federal laws that apply to them.