+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG) Up to $9.50 Off w/ Free S&H — 3 models

Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Black Nitride, CC-1206
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Manganese Phosphate, CC-1204
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Nickel Boron, CC-1205
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Black Nitride, CC-1206
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Manganese Phosphate, CC-1204
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Nickel Boron, CC-1205
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Black Nitride, CC-1206
1 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Black Nitride, CC-1206
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Manganese Phosphate, CC-1204
2 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Manganese Phosphate, CC-1204
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Nickel Boron, CC-1205
3 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group, Nickel Boron, CC-1205
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Black Nitride, CC-1206
4 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Black Nitride, CC-1206
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Manganese Phosphate, CC-1204
5 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Manganese Phosphate, CC-1204
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Nickel Boron, CC-1205
6 of 6 images
Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Nickel Boron, CC-1205

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Questions & Answers
Customer Reviews
Most Recent Reviews
Solid Quality by Charlie, Verified Owner, January 15, 2026
This is a solid bolt for a solid price. After a few dozen rounds, everything cleans up nicely and still feels nice and tight.
Most Recent Reviews
Really a great BCG by Boonegump, Verified Owner, June 3, 2025
It’s a great BCG I haven’t put a crazy amount of rounds through it yet but it’s got a tight snug fit to my Ballistic Advantage barrel. No slop or play!
Read All 2 Reviews
3 Models Available
Color
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $151.43
You Save Up to 28%
OP Bucks$3.61

Product Info for Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG)

Coated bolt carrier group (full auto version) for AR15, M16, or M4 machined from Mil-Spec 8620 aircraft quality steel with shrouded firing pin and Mil-Spec chrome lined interior. BCG includes the proper chrome lined and heat treated gas key. Gas key is secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This ensures a strong staking and proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158 steel and shot peened for increased strength per Mil-Spec; includes tool steel extractor with spring and viton O-ring; firing pin chromed finished with firing pin retaining pin and cam pin.image

HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected).

Specifications for Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG):

Manufacturer: Cryptic
Fabric/Material: 4140 heat treated steel
Caliber: 6.5mm Grendel II
Gun Make: AR Platform
Gun Model: M16, M4, AR-15
Hand: Right
Weight: 11.55 oz
Condition: New

Features of Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG)

  • Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat treated to 60-61 RC
  • Mil- Spec Gas Key
  • Key Staked with Grade 8 Screws, per Mil-Spec
  • Mil-Spec Carpenter 158 Bolt w/ Spring and Ejector
  • Tool Steel Extractor w/ Spring and viton O-ring
  • Mil-Spec Firing Pin w/ Chrome Finish
  • Mil-Spec Cam Pin
  • Full Auto Carrier (Backward compatible with all semi-auto rifles)
  • BCG Weight 11.55 oz.

Package Contents:

  • Cryptic 6.5 Grendel - Type ll Bolt Carrier Group

What firearm models does the manufacturer say Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG) is compatible with?

The manufacturer suggests that Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG) is compatible with AR-15, M4, M16

Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG) Orderable Models

List of Orderable Models

  • Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Black Nitride, CC-1206 , MPN: CC-1206 , Code: 4ZT-BCG-CR25-CC-1206
  • Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Nickel Boron, CC-1205 , MPN: CC-1205 , Code: 4ZT-BCG-CR25-CC-1205
  • Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Manganese Phosphate, CC-1204 , MPN: CC-1204 , Code: 4ZT-BCG-CR25-CC-1204

Cryptic 6.5 Grendel - Type ll Bolt Carrier Group (BCG) Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Cryptic 6.5 Grendel - Type ll Bolt Carrier Group BCG, Black Nitride, CC-1206 , MPN: CC-1206-EDEMO , Code: 4ZT-BCG-CR25-CC-1206-EDEMO-RE-C
Compare (0)
1 item has been added
Add at least two items to compare