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Questions & Answers
How wide does the widest part measure that holds the spring? Expert Answer

Tacfire does not provide specific dimensions for their AR15 Buffer Detent Pin. I would recommend contacting them directly for more information.

by Ethan, Gear Expert, May 20, 2022
Customer Reviews
Helpful Positive Review It's a detent pin by Steve B, April 18, 2018
Detent pin came nicely finished. I've seen some detent pins come in that were still usable but a little out of round, this one was perfect and gave me no problems sliding in with the spring. I think I had more problems getting the take down pin sprin...
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1/1 found this helpful
Helpful Positive Review Buffer spring kit by Cap, April 6, 2022
Parts came in quick fit perfectly have made many orders from optics planet all are top notch will be buying from this company again keep up the great work web site is easy to work with every item I order comes fast and are high grade have yet to have...
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1/1 found this helpful
Helpful Negative Review Broken Detent in a Week by Austin, January 17, 2020
Tip of the detent snapped off within one week of installation. Hadn't even gotten the chance to fire it yet. Using it with a Law Tactical folding stock so I got a nice buffer surprise to the face when I went to fold it down.
6/6 found this helpful
Most Recent Reviews Tacfire ar buffer detent by Ev, Verified Owner, May 20, 2025
Very straight forward but works great for an ar15 build
Most Recent Reviews Always have extra! by RCH, Verified Owner, March 30, 2025
Bought the 10 pack because you never know. Good quality with great Finnish. Can't go wrong for peace of mind!
Most Recent Reviews Upgraded part for replacement. by Dylan Stone, Verified Owner, March 29, 2025
Quick shipping. Decent pricing. Upgrade over OEM. Works fine!
Read All 22 Reviews
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Product Info for TacFire AR-15 Buffer Detent Pin w/ Spring

Trust the quality of this Tacfire AR15 Buffer Detent Pin for use with your firearm. These AR15 Lower Parts by TacFire securely lock your buffer tube into place. This Tacfire Rifle Buffer Detent Pin also includes a spring so that you're ready to install it right out of the box. Outfit your gun with this Tacfire AR Buffer Detent Pin to ensure smooth operation.image

WARNING: California`s Proposition 65

Specifications for TacFire AR-15 Buffer Detent Pin w/ Spring:

Manufacturer: TacFire
Weight: 0.1 oz

Features of TacFire AR-15 Buffer Detent Pin w/ Spring

  • Buffer Detent Length: 0.64in
  • Buffer Retainer Spring Length: 0.95in

Package Contents:

  • TacFire AR-15 Buffer Detent Pin w/ Spring

TacFire AR-15 Buffer Detent Pin w/ Spring Orderable Models

List of Orderable Models

TacFire AR-15 Buffer Detent Pin w/ Spring, Stainless Steel, MAR086-SS , MPN: MAR086-SS , UPC: 811261028241 , Code: 29U-DTN-BDP-MAR086-SS
Tacfire AR15 Buffer Detent Pin w/Spring, Black MAR086 , MPN: MAR086 , UPC: 811261022492 , Code: 29U-DTN-BDP-MAR086
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