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Product Info

***As of 08/02/2017 the BOLTS that come with this item have our Nitride QPQ finish instead of the Titanium Nitride (TiN) coated bolts.***

Carrier:
- 8620 heat treated (case hardened to SAE-AMS-6875). Titanium nitride (TiN) coated

Bolt:
- 9310 Heat treated (case hardened to SAE-AMS-6875) with additional cryo freeze for extra strength. 
- Shot peened precision ground diameters.
- Nitride Coatins
- Magnetic particle inspected to ASTM E1444 aircraft quality inspection procedure for molecular soundness and longer life of the Bolt.

Extractors:
- Aircraft quality alloy steel shot peened.
- Heat treated to military drawing specification SAE-AMS-6875.
- Phosphated to 5.3.1.3 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
- Titanium nitride (TiN) coated

Cam pins:
- Precision machined.
- Heat treated to SAE-AMS-6875.
- Phosphated to 5.3.1.3 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 5.3.1.3 of MIL-STD-171.

Ejector:
- Precision machined.
- Heat Treated to SAE-AMS-6875.
- Phosphated to 5.3.1.3 of MIL-STD-171.

Gas rings:
- 3 pc. stainless steel per Mil-Spec.

-ENHANCED EXTRACTOR SPRINGS
To assure the highest degree of consistency and reliability, SpecOp MFG invests 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.

Results may vary, but SpecOp Tactical Center, LLC has spared no expense in our commitment to provide you the very best in long term performance and reliability of our products! Go here for more information on these springs.

SpecOp MFG - 223/5.56 Bolt Carrier Group, Titanium Nitride Coated

$179.00

SPM-556-TIN-BCG

Availability : Available

Warning: Last items in stock !

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