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BCM Standard 5.56mm Upper Receiver Group

$737.00$820.00

Video | What’s Included | Specs | Pictures | FAQ | Restrictions

BCM has been our go-to for many years because they do an outstanding job of balancing quality, price, and overall performance. These standard uppers still feature the fit and finish you’ve come to expect from BCM without all the bells and whistles of the MK2 receivers at a lower base price. While we thoroughly enjoy the improvements found in the MK2 uppers, the cost/performance ratio of the standard upper receivers is hard to beat. 

WHAT’S INCLUDED


  • BCM Standard Upper Receiver Group
  • BCM Bolt Carrier Group
  • BCM M-LOK QD Mount
  • M-LOK Picatinny Section
  • Allen Keys

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SPECS


UPPER FEATURES

  • Manufactured by Bravo Company MFG, Inc. (BCM)
  • Fully assembled, headspaced, and test-fired
  • M4 feed ramp barrel extension and upper receiver for reliable feeding
  • T-marked upper receiver for easy configuration of tactical accessories
  • USGI 1/7 twist rate for versatility with various ammunition
  • Mil-Spec barrel steel (Certified Mil-B-11595E) for strength and durability
  • Chrome bore and chamber for enhanced chambering, extraction, and reliability
  • Manganese phosphate barrel finish for corrosion resistance
  • 5.56 NATO Chambers for compatibility with military and high-quality ammunition
  • HPT / MP Inspected barrels for quality assurance and flaw detection

BFH BARREL FEATURES

  • Cold Hammer Forged Barrel
  • USGI 1/7 Twist Rate
  • Mil-Spec Barrel Steel (Mil-B-11595E)
  • Chrome Bore and Chamber
  • Manganese Phosphate Barrel Finish
  • 5.56 NATO Chamber
  • Government Barrel Profile
  • HPT / MP Inspected

STANDARD BARREL FEATURES

  • USGI 1/7 Twist Rate
  • Mil-Spec Barrel Steel (Mil-B-11595E)
  • Chrome Bore and Chamber
  • Manganese Phosphate Barrel Finish
  • 5.56 NATO Chamber
  • Government Barrel Profile
  • HPT / MP Inspected

BOLT CARRIER FEATURES

  • BCM (MPI) complete bolt carrier group for AR-15, M16, or M4
  • Parkerized exterior with chrome-lined inside carrier
  • Machined to USGI specifications, Full Auto Profile
  • M16/M4 carrier with Mil-Spec chrome-lined gas key
  • Gas key heat-treated and chrome-lined, securely fastened with grade 8 fasteners
  • Bolt assembly machined from Mil-Spec Carpenter No. 158 steel, shot peened
  • Includes tool steel extractor and ejector, BCM Extractor Spring
  • HPT (High-Pressure Tested) and MPI (Magnetic Particle Inspected)
  • BCM test fires for function before shipping

Made in the USA.

BUFFER RECOMMENDATIONS

INDEX:

Sprinco Hot White: In the middle of a standard carbine spring and the Blue spring, roughly 7-8% stiffer than standard.
Sprinco Blue: 15% stiffer than standard carbine springs.
Sprinco Green: Rifle length spring for A5/MK2 buffer systems.

16″ MidLength Gas14.5″ MidLength Gas11.5″ Carbine Gas
UnsuppressedCarbine: H1 – Standard Spring
Vltor A5/BCM MK2: -A5H1/T1 – Rifle or Sprinco Green Spring
Carbine: H1 – Standard Spring
Vltor A5/BCM MK2: -A5H1/T1 – Rifle or Sprinco Green Spring
Carbine: H2 – Standard Spring
Vltor A5/BCM MK2: – A5H2/T2 – Rifle or Sprinco Green Spring
Suppressed
(Low BackPressure)
Carbine: H1 – Sprinco Hot White or Blue Spring
Vltor A5/BCM MK2: – A5H2/T2 – Rifle or Sprinco Green Spring
Carbine: H1 – Sprinco Hot White or Blue Spring
Vltor A5/BCM MK2: – A5H2/T2 – Rifle or Sprinco Green Spring
Carbine: H2 – Sprinco Hot White or Blue Spring
Vltor A5/BCM MK2: – A5H2/T2 – Rifle or Sprinco Green Spring
Suppressed
(High BackPressure)
Carbine: H2 – Standard or Sprinco Hot White Spring
Vltor A5/BCM MK2: A5H2/T2 – Rifle or Sprinco Green Spring
Carbine: H2 – Standard or Sprinco Hot White Spring
Vltor A5/BCM MK2: A5H2/T2 – Rifle or Sprinco Green Spring
Carbine: H3 – Sprinco Hot White or Blue Spring
Vltor A5/BCM MK2: – A5H3/T3 – Rifle or Sprinco Green Spring

TECHNICAL SPECIFICATIONS

Specifications 16″, MCMR-13, Government Profile, MidLength Gas
14.5″, MCMR-13, Government Profile, MidLength Gas
Weight3 lb 15 oz 3 lb 12.5 oz
Weight, Standard Lower – No Stock5 lb 10.5 oz5 lb 8 oz
Weight, Standard Lower – Law Folder, No Stock6 lb 5.6 oz6 lb 3.1 oz
Length, Upper Only24.6″
Muzzle Device to End Of Receiver
22.9″
Muzzle Device to End Of Receiver
Length, Standard Lower – No Stock31.9″
Muzzle Device to End Of Carbine Extension
30.2″
Muzzle Device to End Of Carbine Extension
Length, Standard Lower – Law Folder, No Stock33.2″
Muzzle Device to End Of Carbine Extension
31.5″
Muzzle Device to End Of Carbine Extension
Length, Standard Lower – Law Folder, No Stock (Folded)26.6″
Muzzle Device to Furthest point
24.9″
Muzzle Device to Furthest point
Measurements are an approximation and can vary slightly between uppers.

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PICTURES

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FAQ

BHF vs. Standard? What do I get?
BFH is BCM’s name for cold hammer forged barrels. CHF barrels generally last a little longer and have more accuracy potential than standard barrels at an increased cost. This is not to say that standard barrels are bad. They will still have a long lifespan and be plenty accurate for 99% of shooters while maintaining a relatively low cost. 

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RESTRICTIONS


BCM products cannot be shipped outside of the US.

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