Guntec USA AR-15 Skeletonized Low Mass Nitride Bolt Carrier Group
Original price was: $229.95.$189.95Current price is: $189.95.
Upgrade your AR-15 with the Guntec USA Complete Nitride Skeletonized Low Mass BCG. Crafted from high-quality steel and assembled by experienced personnel, this BCG features a skeletonized low mass carrier for reduced weight and enhanced performance. With a nitride-coated bolt, carrier, and gas key, along with MIL-SPEC components like the bolt and extractor, this BCG offers durability and reliability.
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Guntec USA AR-15 Low Mass Skeletonized Bolt Carrier Group
Guntec USA Complete Nitride Skeletonized Low Mass BCG is nitride Coated Inside and Out (Bolt, Carrier, and Gas Key) then assembled by experienced personnel. The Guntec complete bolt carrier groups for The AR-15 are made from high quality steel . The bolt carrier is made from 8620 steel and the bolt from 9310 steel. The gas key on the AR-15 Skeletonized Low Mass BCG has been properly staked, the extractor spring has an upgraded O-ring for more tension, and all surfaces are nitride coated. The Bolt has been magnetic particle inspected for proper strength and machining.
Skeletonized Low Mass Carrier
8620 Tool Steel
Full Auto M-16
Mil Spec Bolt
9310 Steel
Magnetic Particle Inspected (MPI)
Mil Spec Extractor
8620 Tool Steel
Nitride Finish
Extractor Spring
Mil Spec Gas Key
8620 Tool Steel
Grade 8 Hardware
Properly Staked
Weight: 8.8 oz
A skeletonized low mass bolt carrier group reduces the weight of the reciprocating mass inside the upper receiver by removing material from the carrier body in areas that are not structurally critical. The lighter carrier moves faster during the cycling cycle, which reduces felt recoil and muzzle movement during rapid fire — an advantage in competition shooting where fast splits and target-to-target transitions are important. The nitride finish provides a hard, corrosion-resistant surface that is more durable than standard phosphate and easier to clean, which is valuable in a high-round-count competition context where reliability and quick maintenance matter. Because the lower carrier mass changes the timing of the action, buffer weight and spring selection may need to be adjusted to maintain reliable cycling across different ammunition loads and suppressed versus unsuppressed configurations. The Guntec USA skeletonized low mass BCG is built to mil-spec dimensions and is compatible with standard AR-15 upper receivers in 5.56 NATO and .223 Remington. For competition AR-15 shooters who want to reduce recoil impulse with a lightweight carrier, the Guntec USA low mass nitride BCG is a cost-effective option in the competition BCG category. Browse our full AR-15 Bolt Carrier Groups selection to compare other BCG options.
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1 review for Guntec USA AR-15 Skeletonized Low Mass Nitride Bolt Carrier Group
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Frequently Asked Questions
What is a skeletonized low mass BCG?
A skeletonized low mass BCG has material removed from non-structural areas of the carrier body to reduce its overall weight. The lighter reciprocating mass reduces felt recoil and muzzle movement during rapid fire, which can improve split times and target transition speed in competition shooting applications.
Does a low mass BCG require buffer adjustments?
Potentially, yes. Reducing the carrier mass changes the timing of the cycling cycle, which can affect reliability with certain ammunition loads or when switching between suppressed and unsuppressed fire. Buffer weight and spring selection may need to be tuned to ensure reliable extraction and cycling with a low mass carrier.
What upper receivers is this BCG compatible with?
The Guntec USA skeletonized low mass BCG is compatible with standard AR-15 upper receivers in 5.56 NATO and .223 Remington. It uses mil-spec bolt and carrier rail dimensions and installs in any mil-spec AR-15 upper receiver.
Randone –
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