Phase 5 AR-15 Bolt Carrier Group Black Phosphate AR15 BCG
THIS IS A PHASE 5 AUTHORIZED SALE - DUE TO DISCONTINUANCE OF OLD LOGO STYLED PART - ONCE THEY'RE GONE, YOU WON'T BE ABLE TO GET AT THIS PRICE AGAIN!
AR-15 Bolt Carrier Group Phosphate complete.
Assembled complete with campin, firing pin, bolt and gas key. HPT/MPI Bolt. Heat treated and chrome lined gas key. Drop-in BCG, ready to shoot.
Bolt carrier group specifications-
-Mil-Spec 8620 tool steel Semi bolt carrier w/shrouded firing pin.
-Carrier has 22.214.171.124 MIL-STD-171 phosphate finish inside and out with 126.96.36.199 MIL-STD-171 hard chrome bore.
-Laser engraved with Phase 5 logo (visible through ejection port door opening).
-Mil-Spec tool steel carrier key.
-Carrier key has 188.8.131.52 MIL-STD-171 phosphate finish inside and out with 184.108.40.206 MIL-STD-171 hard chrome bore.
-Carrier key is attached with Grade 8 hardware and properly torqued 56 IN/LBS.
-Bolts are CNC machined from Carpenter No. 158®.
-Bolts have 220.127.116.11 MIL-STD-171 phosphate finish inside and out.
-All bolts are shot peened per the current Mil-Spec to relieve metal strain
-All bolts (NOT JUST A SAMPLING) are Individually High Pressure Tested (HPT) and then Individually Magnetic Particle Inspected (MPI).
-Tool steel extractor, shot peened, 18.104.22.168 MIL-STD-171 phosphate finish, fitted with a Mil-Spec black extractor spring insert and Mil-Spec Viton o-ring to avoid most extraction problems.
-Mil-Spec firing pin with 22.214.171.124 MIL-STD-171 hard chrome finish.
-Mil-Spec cam pin with 126.96.36.199 MIL-STD-171 phosphate finish.
-Mil-Spec firing pin retaining pin with 188.8.131.52 MIL-STD-171 phosphate finish.