Finally, we have build kits in the .308WIN (7.62 x 51mm) caliber. This LR-3o8 build is just what you need to introduce this caliber into your growing AR rifle collection. This kit's upper assembly gives you a 20" nitride-coated barrel with a 15" handguard that has M-Lok attachment points running its entire length. Mount a bipod, foregrip, backup sights, or whatever else you choose.
Please note: this kit will create an LR-308 rifle, and not an AR-10, which is a design proprietary to Colt only. But that's the good part. The vast majority of .308-sized AR parts out there are made for the LR-308 / SR-25 platform. Just be sure that any accessories you get for this bad boy are compatible.
LR-308 Rifle Kit Specs:
Barrel Length: 20"
Barrel Profile: Light contour
Gas System: Rifle-length
Barrel Steel: 416R, match-grade
Barrel Finish: Stainless
Chrome Lining: N/A
Muzzle Thread: 5/8-24
Chamber: .308 Winchester
Twist Rate: 1:10
Diameter at Gas Block: 0.125
Gas Block Type: Low-profile
Muzzle Device: .308 Shark Muzzle Brake
Receiver Material: Forged 7075 T6
Receiver Type: Low-profile w/ Picatinny
Handguard Type: Custom, super-slim 15” M-Lok
Bolt Carrier Group Included: Yes
Bolt Steel: Shot-peened, MPI-tested 9310
Bolt Carrier Profile: M16 Full-auto
Charging Handle Included: Yes
LR-308 Rifle Kit Features:
- Compatible with all DPMS .308/LR-308 parts
- Features match-grade 416R stainless barrel
- Includes all the parts you need to build an LR-308
- Not considered a firearm, no FFL required
- Upper ships pre-built, ready to fire
- Proudly made in the U.S.A.
- Backed by Lifetime Warranty
Barrel: Stainless steel, match-grade 20”, chambered in .308 Winchester. Made of 416R stainless. Features 1:10 twist rate and rifle-length gas system. Includes custom 15” slant M-Lok handguard, .125" diameter low profile gas block, and .308 Shark Muzzle Brake.
Upper: Mil-spec, made of forged 7075 T6 aluminum. Hard-coat anodized (Type III).
Bolt: Mil-spec, M16 full-auto. Shot-peened, made of 9310 steel. Includes 8620 gas carrier.
80% Lower: Complete with an optional 80% lower. All lowers include mil-spec fittings and hard-coat anodizing.
Lower Parts Kit: Includes mil-spec CMMG lower parts kit. Features six-position M4 buttstock, shorty buffer tube, and .308 buffer.
Charging handle: Standard 7075 Forged charging handle.
Please note: If completing your LR-308 build using the optional 80% lower, please select an 80 lower jig from our available options.
AR-15Lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.