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Reviews & Ratings for Guntec USA AR-308 Cal Firing Pin Retainer — 8 reviews

(8 reviews)
Guntec USA AR-308 Cal Firing Pin Retainer
Guntec USA AR-308 Cal Firing Pin Retainer
$9.99 $8.99 Save 10%
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Most Helpful Positive Review Work great
Pin fit perfect. Fit into BCG like a glove. Always like these pins better than the cotter pins. Easy to use and better quality than most. Seem solid and good steel. I have used this pin in several BCGs and it fits in all types.
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Does not work with JP Bolt carrier

by Sean, Verified Owner from CO, United States Written on August 30, 2025
It looks like a quality item but it does not fit into my .308 FMOS JP BCG
Would recommend: No
Was it helpful to you? Yes | No
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Better quality pin

by BCA, Verified Owner from AR, United States Written on July 20, 2024
These are better quality than a standard pin, but at nearly 10 bucks they are overpriced.
Pros:
  • Quality and design
Cons:
  • price
Would recommend: Yes
Was it helpful to you? Yes | No
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Firing pin retainer

by Tony, Verified Owner from MN, United States Written on May 25, 2024
Great pin, recessed pin, stronger than the original cotter pin. Bought 2 more for other BCG's
Pros:
  • Stronger than a cotter pin
Cons:
  • Need a punch to extract
Best Used for:
  • BCG
Would recommend: Yes
Was it helpful to you? Yes | No
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Works great!

by Sammy, Verified Owner from OR, United States Written on February 16, 2024
Used for a recent Ar10 build and works great! Quality value for the price couldn't ask for me!
Would recommend: Yes
Was it helpful to you? Yes | No
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AR 10 firing pin retainer

by RDS, Verified Owner from MI, United States Written on January 10, 2024
Works much better than the stock retainer. Very easy to remove and place back in compared to anything about the stock one.
Pros:
  • better product
Cons:
  • None
Best Used for:
  • AR10
Would recommend: Yes
Was it helpful to you? Yes | No
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Some Carriers

by Steven Colton, Verified Owner from MD, United States Written on November 19, 2023
Works in both my nickel boron toolcraft BCG but not in a BCA nitride or Davidson Defense ones, so there’s that, seems to be a lot nicer for ease of use and convenience when disassembled for cleaning and service
Would recommend: Yes
Was it helpful to you? Yes | No
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Retaining pin

by Bk, from MI, United States Written on December 10, 2022
Ordered to replace on a custom build 45 raptor upper. Prior pin had either broke, or come out due to the higher pressure of this round. Guntec fit very firmly, and so far has held up great. It's a plus that it is cerakoted for durability. Product shipped quickly and on time
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No
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