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RTB Premium Phosphate Bolt Carrier Group - 158 HPT/MPI
RTB 158 HPT/MPI Mil-Spec Phosphate Bolt Carrier Group


 
MSRP $129.99
SALE PRICE: $69.95
Savings: $60.04

Stock Status :(Out of Stock)
Product Code: RTB-M16-HPT-MPI
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Description
 

Right To Bear Premium Mil-Spec Phosphate Bolt Carrier Group - 158 HPT/MPI BCG

These Military surplus 158 Bolt carrier groups are manufactured by a leading Military contractor to the exacting standards of the US Military. These HPT / MPI BCG's are rigorously inspected and are individually High Pressure Tested and then go through a Magnetic Particle Inspection.


Mil Spec Bolt
  • 158 Carpenter Steel
  • Shot Peened
  • High Pressure Tested (HPT)
  • Magnetic Particle Inspected (MPI)


Mil Spec Carrier
  • 8620 Aircraft Grade Steel
  • Full Mass M-16


Mil Spec Extractor
  • 4140 Steel per ASTM A108, cold drawn and stress relieved BHN 187-22
  • Phosphate Finish
  • Extractor Spring
  • Black Extractor Insert
  • Viton O-Ring

Mil Spec Gas Key
  • 4130 Profile Extruded Steel
  • Grade 8 Hardware
  • Properly Staked
  • Chrome Interior

Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 8 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 Excellent “Mil-Spec” BCG January 26, 2020
Reviewer: Nick441 from North Port, FL United States  
Not much to say.....as others have stated RTB sources these BCG’s from AO Precision. So you know they are good to go and are built to last. Buy with confidence.

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  0 of 0 people found the following review helpful:
 
5 of 5 Mil-Spec BCG meant for use January 14, 2020
Reviewer: Anonymous Person from AZ United States  
This is an AO Precision BCG for sure. Has the gray type finish that you see on a Colt/Mil-Spec BCG. It comes covered in a cosmoline type preservation agent to preserve the finish. Bolt is faintly marked MPI/HPT and has an O-ring on extractor. The machining is excellent and the finish is typical for what you see for a mil-spec BCG. It is a purely functional BCG and not meant to win any fashion shows

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  1 of 1 people found the following review helpful:
 
5 of 5 My favorite budget BCG! December 21, 2019
Reviewer: Justin from Grand Rapids , MI United States  
I ordered (2) of these during the Black Friday sale and the price was great and shipping was fast!  These are manufactured by AO Precision to my knowledge (as of review date), and they make BCG'S for a lot of the big manufacturers in the game.  These ARE marked MPI/HPT on the bolt and the carrier and gas key are both chrome lined.  Both of mine shipped with extractor O-rings and springs, so that's the way I prefer to run all of my BCG's.  It seems like they are using WD-40 to coat these after they manufacture them, cause there is dark brown stains on some parts of the carrier, and that is very difficult to remove and should not be used IMO.  Also, one of the BCG's had an out of spec extractor pin, but that was taken care of immediately after one email was sent, so BRAVO on the excellent customer service!  Overall, this is an EXCELLENT choice for a Mil-Spec BCG and you can't really ask for more!

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  1 of 1 people found the following review helpful:
 
5 of 5 Great BCG for the money October 26, 2019
Reviewer: Jerry from Hobart, IN United States  
So far so good, it works as intended. It was a little stiff when I got it but with use I’m sure it will smooth out.

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  1 of 1 people found the following review helpful:
 
5 of 5 Bolt Carrier October 23, 2019
Reviewer: Kent Ervin from Avondale, CO United States  
great products not much else to say

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