Centurion Arms MK11 7.62 Billet Lower Receiver - Stripped (MK11-B-762-LOWER)
Build a rock-solid .308/7.62 AR-10 rifle with the Centurion Arms MK11 Billet Lower Receiver—a precision stripped lower machined from 7075-T6 aerospace-grade aluminum. Compatible with Knights Armament SR-25 and LMT uppers (with minor generational fit variations), this USA-made stripped receiver delivers enhanced ergonomics, flawless function, and premium quality for duty, precision, competition, or tactical builds where reliability and reload speed are non-negotiable.
Featuring the largest flared, deep-beveled magwell for lightning-fast magazine changes, integrated trigger guard, and full compatibility with standard AR-10/7.62 parts kits (including most ambi controls like selectors and Norgon/FCD mag releases), it's ready for your custom LPK install. All sharp edges are de-burred, selector markings are pictograph-accurate for 90° safety, and the MIL-A-8625F Type III hard anodized flat black finish ensures long-term durability and corrosion resistance.
Key Features
- Precision CNC-machined from billet 7075-T6 aerospace-grade aluminum for superior strength and dimensional accuracy
- Largest flared, deep-beveled magwell dramatically improves reload speed without snagging on gear
- Integrated trigger guard for a sleek, no-snag profile
- Compatible with TDP/mil-standard 7.62 AR lower parts kits (standard 5.56 LPKs work minus ambi bolt catch/pins; full 308 LPKs compatible)
- Ambi-ready design supports popular ambidextrous controls (selectors, Norgon/FCD mag releases)
- Pictograph selector markings properly aligned for 90° safety operation
- All sharp edges de-burred; dimensional accuracy inspected for consistent fit
- MIL-A-8625F Type III, Class 2 hard anodized flat black finish (standard; Cerakote available on request)
- 100% USA-made components, materials, and packaging
- Knights Armament SR-25 and LMT upper compatible (best fit as matched set; some generational gaps possible but function unaffected)
Specifications
- Manufacturer: Centurion Arms LLC
- Model: MK11 7.62 Billet Lower Receiver (Stripped)
- Manufacturer Part Number: MK11-B-762-LOWER
- Configuration: Stripped lower
- Material: Billet 7075-T6 Aerospace-Grade Aluminum
- Finish: MIL-A-8625F Type III, Class 2 Hard Anodized Flat Black
- Weight: Approximately 14.9 oz (with takedown pins and ambi release; stripped weight lower, around 11-12 oz)
- Compatibility: .308 Win / 7.62x51 AR-10 platforms; KAC SR-25 and LMT uppers (slant-cut pattern); standard 7.62 mil-spec parts
- Not Compatible With: Daniel Defense DD5V1 upper receiver
Whether you're assembling a precision DMR, hard-use battle rifle, or custom .308 platform, the Centurion MK11 stripped billet lower offers elite machining, enhanced ergonomics, and proven compatibility for a flawless build. Pair it with a matching MK11 upper for optimal fit and performance.
Grab this premium stripped MK11 7.62 lower today and start your ultimate .308 AR build with unmatched quality and speed on your next project or range day!
- Must be 21 or older to purchase:
- Federal law requires that you be 21 years of age or older to purchase a stripped receiver or frame.
- FFL required for transfer:
- Please submit or have FFL submit ATF Form 8 (Federal Firearms License) to support@aerospacearms.com. Item will not ship until FFL information has been provided and verified.
