Description

The enhanced bolt carrier is designed to reduce carrier tilt/cant during recoil and increasing reliability by strategically relocating key bearing surfaces. The enhanced carrier has fewer points of contact resulting in less friction area and the slight increase in carrier mass extends dwell time and ensures proper gas pressures for reliable extraction.

• Material: Case Hardened 8620 Steel
• Finish: Black Nitride. This advanced low friction coating minimizes the need for lubricants.
• Gas Key: 4130 Steel, attached with Grade 8 hardware and properly staked into a milled “valley” to ensure proper positioning
• Ejection Port: Area is milled with added material for more strength and rigidity
• Cam Pin: Hardened 4340 cam pin
• Firing Pin: Mil Spec firing pin made of 8740 steel, center-â€less ground and Hard Chrome coated
• Carrier fits AR15/M4 compatible style Rifles (i.e.) .223/5.56mm, .300BLK, 6.8SPC
The Bolt is “true” Mil Spec dimension and external surfaces are CNC ground after heat treat for a precision fit.

• Material: Case Hardened 9310 Steel
• Finish: All Bolt components Shot Peened & Black Nitride coated
• Extractor: 4340 Steel, Manganese Phosphate coated o Mil Spec Extractor Spring & O-â€Ring Combination
• MPI: Magnetic Particle Inspected
• HPT: High Pressure Test
• Bolts are lot tested under Mil-â€STD-â€1816 for both HPT and MPI

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Additional Information

Finish:	Black Nitride
Caliber:	5.56
Caliber:	.223
Caliber:	300 BO
Platform:	AR-15

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11 Reviews

5
I've only shot it once, and it works

Posted by David S. on Jul 16th 2018

I've only shot it once, and it works very well
5
Nice... Seems to be a nice BCG. Can't

Posted by Ray Royal on Jul 7th 2018

Nice... Seems to be a nice BCG. Can't wait to put it to test in the 458 socom
5
Excellent BCG high value low cost! Purchased two

Posted by Juan on Mar 28th 2018

Excellent BCG high value low cost! Purchased two of these for my 223 wylde and 5.56 builds. Worked flawlessly 200 rounds so far. Love the profile and finish on them as well. Thanks ACME!
5
Excellent BCG 5.56 Acme is a great source

Posted by David Land of Enchantment on Mar 5th 2018

Excellent BCG 5.56 Acme is a great source for all your bolt carrier groups,have purchased the .308s and now these 5.56/.223 bcg�s. Quality of machine and melonite is very good. These are the same weight of mil. Spec. so do not let the appearance fool ya. Surface wear marks are smooth on the carrier. Don�t be surprised if you wait too long they could be out of stock. I will order more to replace some old one�s instead of rebuilding at this price.
5
Nice BCG Excellent quality out of the box.

Posted by Aaron on Mar 1st 2018

Nice BCG Excellent quality out of the box. Bought for my 7.5 ar pistol Runs flawless!
5
BCG This bolt carrier group seem to be

Posted by Allen R Peters on Feb 27th 2018

BCG This bolt carrier group seem to be a great little gem for the money. Only put 150 or so rounds on ot so far, no failures
5
Excellent Value Very rugged and should last a

Posted by Moburg Richard on Jan 27th 2018

Excellent Value Very rugged and should last a lifetime.
5
nice bcg fit and function is awesome!!

Posted by chris on Jan 22nd 2018

nice bcg fit and function is awesome!!
5
Nitrate bcg Good quality.

Posted by Zack Drisko on Jan 5th 2018

Nitrate bcg Good quality.
4
Slick BCG Four stars for not being stainless.

Posted by Frank Garske on Dec 16th 2017

Slick BCG Four stars for not being stainless. That's why they call me an SOB, its my standard- Stainless Or Better. That being said, though, it is a full mass bolt, which helps prevent cycling issues in pistol-length gas systems. The finish is nice and slick, and aside from a once-over to adjust the gas rings and whatnot, functioned straight out of the box. Also, If you are running a large caliber AR, this slab-side design looks good in oversize ejection ports. Not that it should matter, but we all know that it does.