Spikes Tactical HPT/MPI M16 Complete Bolt Carrier Group Phosphate Coating
Original price was: $149.95.$134.95Current price is: $134.95.
Elevate your M16 rifle’s performance with the Spike’s Tactical HPT/MPI Complete Bolt Carrier Group. Phosphate coated for durability, it features 8620 steel construction and a Carpenter 158 steel bolt for long-lasting reliability. Properly staked gas key and upgraded O-ring extractor spring ensure consistent performance. Ideal for competition or duty, this complete BCG is a must-have for any serious shooter.
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Description
Spikes Tactical M16 Bolt Carrier Group for .223/5.56 and 300 Blackout Phosphate Coated
If you’re looking for a top-of-the-line, high performance bolt carrier group for your M16 rifle, look no further than the Spike’s Tactical HPT/MPI M16 Complete Bolt Carrier Group. This BCG is phosphate coated inside and out for superior durability and corrosion resistance, and is laser engraved with the Spike’s Tactical Spider logo. Made from 8620 steel, with a carpenter 158 steel bolt, this BCG is built to last. Basically, the gas key is properly staked, and the extractor spring has an upgraded O-ring for more tension. All surfaces are MIL-SPEC phosphate coated and chrome lined inside where specs call for it. Additionally, this is a complete bolt carrier group that’s ready to install and go – perfect for competition or duty use. Get the best of the best with the Spike’s Tactical HPT/MPI M16 Complete Bolt Carrier Group.
Spikes Tactical Phosphate coated BCG Features:
Mil Spec Carrier
8620 Tool Steel
Basically, Full Auto M-16
Mil Spec Bolt
158 Carpenter Steel
Shot Peened
Also, High Pressure Tested (HPT)
Magnetic Particle Inspected (MPI)
Mil Spec Extractor
8620 Tool Steel
Phosphate Finish
Extractor Spring
Black Extractor Insert
Viton O-Ring
Mil Spec Gas Key
8620 Tool Steel
Also, Grade 8 Hardware
Properly Staked
Chrome Interior
Retaining Pin
Weight: 11.6oz
SKU: ST5BG01
Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or reproductive harm. For more information, visit www.p65warnings.ca.gov
A complete bolt carrier group (BCG) includes the bolt carrier, bolt, firing pin, firing pin retaining pin, cam pin, and extractor with extractor spring and insert — all of the components needed to complete an AR-15 upper receiver. Phosphate (parkerized) finish provides a matte, corrosion-resistant surface that holds oil well for lubrication. HPT (high pressure tested) and MPI (magnetic particle inspected) are quality control processes: HPT fires a proof load to verify structural integrity, and MPI uses a magnetic field and iron particles to detect surface and subsurface cracks in the bolt. The M16 carrier profile is fully compatible with AR-15 lower receivers in semi-automatic fire and is the standard carrier used by most quality BCG manufacturers for its additional mass and more complete gas seal compared to a cut-down AR-15 carrier profile.
Additional information
| Weight | 2 lbs |
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Frequently Asked Questions
What does HPT/MPI mean?
HPT (High Pressure Tested) means each bolt has been proof-fired with an over-pressure round to verify structural integrity. MPI (Magnetic Particle Inspected) uses a magnetic field and iron particles to detect surface and subsurface cracks. Together, these are the quality control standards used by the U.S. military for service rifle bolts.
Is the M16 carrier compatible with an AR-15 lower?
Yes — the M16 carrier profile is fully compatible with standard AR-15 lower receivers in semi-automatic fire. The M16 carrier is preferred by most quality BCG manufacturers for its additional mass and more complete gas seal compared to a cut-down AR-15 profile carrier.
What finish does phosphate provide?
Phosphate (parkerized) finish provides a matte gray, porous surface that holds oil well for lubrication and provides good corrosion resistance. It is the standard military finish for AR-15/M16 BCGs and is a proven, durable option for general use.
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