308ar Bolt Completion Group
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specifications

Manufacturer:

JP Enterprises Inc

Platform:

AR-10

Caliber:

.308 / 7.62

    308ar Bolt Completion Group

    Caliber Manufacturer Color Weight Merchant Price Merchant URL
    .308 / 7.62 JP Enterprises Inc None None None $192.80 Brownells Add

    Prices last checked September 2026. Prices and availability change often, so confirm on the retailer's site.

    Complete bolt assembly is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. SAE 9310 steel has a tough, ductile inner core highly resistant to stress fracturing, with a hard outer surface that resists galling and wear, to ensure a service life of up to 60,000 rounds. This is the same steel used in the transmission gears of Formula 1 race cars, so it's ideal for high-impact, high-heat applications like sustained full-auto fire. Meticulously machined radiuses on all 90-degree corners on the locking lugs help distribute impact force evenly and further red Mfg: J P Enterprises SPECS: SAE 9310 nickel-chromium-molybdenum steel, black nitrate. Fully assembled with extractor, gas rings, ejector, pins, and springs installed. .308 fits JP LRP-07 and DPMS LR-308 rifles only.

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