ADK Defense Ion Nitride Lr-308 Ar .308 6.5 Creedmoor

Bolt Carrier Group With Fwd Assist Notches.

Fits All Lr-308 Or Dpms Type Platform Rifles

Very High Quality

ADK Defense Is The Leading Supplier For The Armed Forces For Bolt Carriers Tried & True This .308 6.5 Creedmoor Bolt Carrier Group Is Engineered & Designed To The Highest Tolerances & Military Specifications & Beyond. The superior nitride QPQ Ion Finish Ensures Long Term Durability & Lubrication.

This Bolt Carrier Is The Very Best You Can Get For Your Lr-308 Platform Gun.

Most Of the 308 Ar Rifles On The Market Today Are The Lr-308 Platform or Dpms Platform.

Certified For Use By US Military & Law Enforcement


Lr-308 Carrier DPMS compatible

8620 heat treated (case hardened to SAE-AMS-6875). QPQ / nitride / melonite coated


- 9310 Heat treated (case hardened to SAE-AMS-6875) with additional cryo freeze for extra strength.

- Shot peened precision ground diameters.

- Magnetic particle inspected to ASTM E1444 aircraft quality inspection procedure for molecular soundness and longer life of the Bolt.


- Aircraft quality alloy steel shot peened.

- Heat treated to military drawing specification SAE-AMS-6875.

- Phosphated to of MIL-STD-171.

Gas key:

- Gas key bolt, grade 8 fully knurled.

- Gas key, aircraft quality steel heat treated to SAE-AMS-6875 QPQ HT PROCESS .

Cam pin:

- Precision machined.

- Heat treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171

Firing pin:

- Machined and precision ground for accuracy

- Heat treated to military drawing specification per SAE-AMS-6875

- Chrome lined per 1.2.2 of mil-std-171

Firing pin retaining pin:

- Unique designed custom steel pin contouring the carrier body.

- Heat treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171.


- Precision machined.

- Heat Treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171.

Gas rings:

- Stainless Steel per Mil-Spec 3 Piece design.


To assure the highest degree of consistency and reliability, we invest in premium extractor springs from Tactical Springs LLC / Sprinco USA along with a Mil-Spec Black Viton Extractor O-Ring per MIL-R-83248C. The springs are constructed from Chrome Silicon wirestock, a high tensile strength alloy ideally suited for high heat and high cyclic rate applications. The springs are heat treated, stress relieved, moly-plated, and most importantly, Cryogenic Processed post winding. While Cryogenic Processing typically extends the duty cycle of Chrome Silicon springs 3X - 7 X, these extractor springs have proven to surpass that multiplier. Unlike Music Wire or 17-7PH Stainless extractor springs which can require replacement at 2,500 to 5,000 round intervals for maximum reliability, this is likely to be the only extractor spring you’ll require for the life of the bolt! Numerous accounts have been recorded from customers with round counts in excess of 100,000 cycles on a single spring and O-ring with no noticeable degradation in performance. You’ll go through a number of barrels and extractors along the way to reaching that level, but the spring and O-rings can stay along for the ride.

Omega Manufacturing Lr-308 Charging Handle Aluminum

.308 charging handle assembly for DPMS .308 style rifles Aluminum construction black finish right hand

Fits all LR-308 platform guns by DMPS, Mega, Aero precision, CMMG, and most other companies (Will not fit Armalite)

Coupons for Delta Team Tactical store

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Comments (3)

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I have this on my Aero 308 Receiver set no issue good price!!

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Has anyone used these and do they work
with Aero uppers?

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Sorry normally I try to reply to these if no one else does. I have used them personally in multiple rifle builds. Zero issues personally and have not heard of anyone having any issues with any 308 uppers.

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