Presma AR-15 Barrel Thread Protector Nut for 5/8x32tpi Muzzle Threading, Black Carbon Steel, BTPR04

Presma AR-15 Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Black Carbon Steel, BTPR01

Presma AR-10 Barrel Thread Protector Nut for 5/8inx24tpi Muzzle Threading, Black Carbon Steel, BTPR02

Presma AR-15 Bull Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Black Carbon Steel, BTPR03

Presma AR-15 Bull Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Stainless Steel, BTPR03-S

Presma AR-10 Barrel Thread Protector Nut for 5/8inx24tpi Muzzle Threading, Stainless Steel, BTPR02-S

Presma AR-15 Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Stainless Steel, BTPR01-S

Presma AR-15 Barrel Thread Protector Nut for 5/8x32tpi Muzzle Threading, Stainless Steel, BTPR04-S

Presma AR-15 Barrel Thread Protector Nut for 5/8x32tpi Muzzle Threading, Black Carbon Steel, BTPR04

Presma AR-15 Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Black Carbon Steel, BTPR01

Presma AR-10 Barrel Thread Protector Nut for 5/8inx24tpi Muzzle Threading, Black Carbon Steel, BTPR02

Presma AR-15 Bull Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Black Carbon Steel, BTPR03

Presma AR-15 Bull Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Stainless Steel, BTPR03-S

Presma AR-10 Barrel Thread Protector Nut for 5/8inx24tpi Muzzle Threading, Stainless Steel, BTPR02-S

Presma AR-15 Barrel Thread Protector Nut for 1/2inx28tpi Muzzle Threading, Stainless Steel, BTPR01-S

Presma AR-15 Barrel Thread Protector Nut for 5/8x32tpi Muzzle Threading, Stainless Steel, BTPR04-S

Government Export Restriction

This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

Questions & Answers

What is the outside diameter of AR 9mm barrel Part Number BTPR01? Manufacturer Answer

BTPR04, https://www.opticsplanet.com/presma-ar-barrel-thread-protector-nut.html.

by Charles Shi, Manufacturer, June 18, 2025

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Do you offer a 1/2 x 24 Stainless Steel Thread Protector? Manufacturer Answer

Sorry, we don't offer this stainless steel thread protector.

by Charles Shi, Manufacturer, October 14, 2026

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Customer Reviews

Helpful Positive Review

Great bang for your buck by Red, Verified Owner, January 26, 2022

Presma Thread Protectors are well knurled in a small tight pattern. Finger friendly. Threaded to specs and very well finished. I got both in black and stainless. These look much better than the pictures. Clean cuts show a quality job. They weight 4oz...
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1/1 found this helpful

Helpful Negative Review

wrong thread pitch by c19brown, Verified Owner, May 22, 2026

Drop down selection doesn't give you a thread pitch. I selected the ar-15 thread pitch and it turned out to be 1/2x32 instead of 1/2x28

1/1 found this helpful

Most Recent Reviews

Super Fast Shipping by Matt, Verified Owner, August 20, 2026

I needed three 5/8 x 24 thread protectors and they were easy to find at opticsplanet. Good selection and prices. Protectors work as advertised.

Most Recent Reviews

AR Barrel Thread Protector Nut by Javier Torres, May 8, 2026

Wasn’t a good fit I will advise to purchase a different item.

Most Recent Reviews

Presma Thread Protector by Riskydabs, Verified Owner, March 18, 2025

Nice & Simple design apply some PFTE Yellow tape to the threads don’t use Locktite

Most Recent Reviews

Presma Barrel Thread Protector by Riskydabs, Verified Owner, March 11, 2025

This was a solid buy im not too shabby with removing firearm accessories so when I got this removing the flash hider was easy and putting this on I suggest some PFTE Yellow Thread Tape High pressure tape your threads and put the thread protector on ...
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Read All 9 Reviews