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RTB Complete Lightweight Bolt Carrier Group - Black Nitride

RightToBear.com AR-15 Black Nitride Lightweight BCG

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MSRP $179.99
SALE PRICE: $105.00
Savings: $74.99


Stock Status :(Out of Stock)
Product Code: SBN16-LW

Add RCA Adjustable Gas Key?


RTB Complete Lightweight Bolt Carrier Group - Black Nitride

Featuring our new Right To Bear Lightweight 5.56/.223 BCG, weighing in at approximately 8.9 Ounces, or 252.5 Grams for you lightweight build fanatics! Using our low mass Bolt Carrier Group creates less reciprocating mass moving back and forth inside the action, which reduces recoil significantly. Our lightweight carrier also allows proper cycling with less gas. When used in conjunction with an adjustable gas block & a reduced power buffer spring, you can tune the gas way down, which will reduce muzzle rise and carbon build up.

The increased lubricity from the Black Nitride process allows you to take full advantage of its lightweight profile. The slick surface combined with our lightweight carrier, creates very little resistance and allows the rifle to cycle smoother and increases reliability.

Click here for the carrier
Click here for the reduced power buffer spring
Click here for the adjustable gas blocks


  • Caliber: .223 / 5.56 / 300 Blackout
  • Enhanced 9310 Steel (Bolt)
  • 8620 Tool Steel (Carrier)
  • Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
  • Tool Steel Extractor
  • Shrouded Firing Pin
  • Mil-Spec Gas Key (4130 Steel) attached with Grade 8 hardware and Properly staked
  • Bolt is shot Peened and MPI
  • Weight: 8.9 Ounces / 252.5 Grams!
  • Black Nitride Finish
  • Lifetime Warranty (you break it, we replace it)

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 12 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 RTB BCG lite November 4, 2019
Reviewer: Leland Nordan from Mc Cool, MS United States  
This is #6 that I've purchased from RTB. I got this one just to have on hand, can't beat the "deal of the day" price on a BCG like this. I've cured three 300 Blackout pistols of poor cycling, failure to feed and bolt not locking back on empty magazine by swapping the heavier carrier with the RTB lightweight carrier paired with the yellow decreased power buffer spring. An added bonus was the reduction in recoil especially with a tunable gas block. So far they've held up well and have performed just as well as carriers triple the cost.

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  0 of 0 people found the following review helpful:
5 of 5 Great! October 19, 2019
Reviewer: Dale HINKLE from SUMMERVILLE, SC United States  
Light and affordable. great for a lightweight build

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  0 of 0 people found the following review helpful:
5 of 5 Love it May 9, 2019
Reviewer: Armando Robledo from Harlingen, TX United States  
Super nice, good quality running it on a 6in 300blk with reduced power right to bear arms spring runs like a champ.

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  2 of 2 people found the following review helpful:
5 of 5 Bang July 23, 2018
Reviewer: Jon B from HARLINGEN, TX United States  
Tested this BCG with RCA adjustable gas key for a special lightweight build. It is very light and worked perfect. Used a standard carbine spring and no problems at all.

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  5 of 5 people found the following review helpful:
5 of 5 Great value lightweight BCG July 18, 2018
Reviewer: Sharp from OH United States  
Been working on putting together a high value, low cost lightweight rifle. Picked this guy up on sale for $99 and I must say that I'm impressed. The nitride finish looks skookum as frig, should have less friction and wear than a standard phosphate finish. Weighs 255g according to my scale, so about 3/4 the weight of a full auto BCG. Running this guy with RTB's lightweight buffer spring, a carbine buffer with the weights removed, and a tuned adjustable gas block, has significantly reduced the the recoil impulse length. The rifle now has a very sharp/fast recoil impulse with much less barrel flip. I can no longer differentiate between the bullet recoil and buffer recoil like I could with a mil-spec setup. Overall you can't go wrong with this BCG, just make sure you run it with the other components, most importantly an adjustable gas block.

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