+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

2A Armament Builder Series Spring/Detents replacement Kit 2A-CK-1

2A Armament Builder Series Spring/Detents replacement Kit (Carpet Kit), Small 2A-CK-1
2A Armament Builder Series Spring/Detents replacement Kit (Carpet Kit), Small 2A-CK-1
1 of 1 images
2A Armament Builder Series Spring/Detents replacement Kit (Carpet Kit), Small 2A-CK-1

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Questions & Answers
Is this all I need for a buffer spring installation? Expert Answer

I would recommend emailing us at Techsales@opticsplanet.com and let us know what your current build looks like. That way we can better determine what is needed for your build.

by Ethan, Gear Expert, May 18, 2022
are they milspec Expert Answer

The manufacturer doesn't specifically state if the 2A Armament Builder Series Spring/Detents replacement Kit is Mil-Spec. I recommend contacting the manufacturer in regards to that information.

by Hunter, Gear Expert, March 3, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Perfect Kit by Drew, Verified Owner, December 7, 2019
The absolute best kit, I opted in getting all my lower parts separate for customizability (Bolt catch, Magazine catch, FCG, etc.) And this ended up being all I needed. No more, no less. Couldn’t find another kit like this one. Other than that, qualit...
Read More...
7/7 found this helpful
Most Recent Reviews
Exactly what I needed by Tim Horejs, Verified Owner, March 22, 2022
Arrived quickly. Nicely packaged. Used to assemble Aero lower with upgraded parts. Came with small plastic container that will be handy for storage. Should’ve bought two! There’s always the next order…
Most Recent Reviews
New AR-9 Build by ChrisKAR, September 10, 2021
I recently started building my wife her own AR. And I knew that this was the first place to start. I bought all the individual parts INCLUDING all the springs, detente and plungers. I’m glad that 2a put this bundle together and I’m glad the OpticsPla...
Read More...
Most Recent Reviews
Fair priced but every thing you may need by David, September 16, 2020
Bought a preban colt a2. Hade wobble and noticed the rear detent spring was missing . rear spacer was missing also. I only used one spring. keeped every thing else for spares. I know I do what the guy be for me did , loose it during cleaning .Simpl...
Read More...
Read All 4 Reviews

Product Discontinued by Manufacturer

2A Armament Builder Series Spring/Detents replacement Kit has been discontinued by 2A Armament and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts yourself to try and find the perfect replacement for you!

Product Info for 2A Armament Builder Series Spring/Detents replacement Kit

Stay organized while putting together your custom build with this 2A Armament Builder Series Spring/Detents replacement Kit. These 2A Armament Firing Accessories made from the experts at 2A Armament include a buffer retainer, buffer spring, bolt catch plunger, bolt catch spring, selector detent pin, selector detent spring, 2A Armament detent pivot pins and 2A Armament detent pivot springs. This 2A Armament AR15/AR10 Spring/Detent Kit also contains 2A Armament guide guides, a hard case, and a case wrench. Be prepared for an untimely end at the parts bin with a 2A Armament Builder Series Spring/Detents replacement Kit in your range bag.image

Package Contents:

  • 2A Armament Builder Series Spring/Detents replacement Kit

Related Products to 2A Armament Builder Series Spring/Detents replacement Kit

Image of Radian Weapons Glock 43X/48 Anchor and Pistol Magwell 3 models Radian Weapons Glock 43X/48 Anchor and Pistol Magwell (38) As Low As (Save Up to 33%) $109.99 Best Rated
Image of TRYBE Defense Standard Handguard Barrel Nut TRYBE Defense Standard Handguard Barrel Nut (22) List: $18.99 (Save 98%) $0.44 Blazin' Deal
Image of TRYBE Defense Standard Handguard Barrel Nut TRYBE Defense Standard Handguard Barrel Nut (22) List: $18.99 (Save 98%) $0.44 Blazin' Deal
Image of TRYBE Defense Standard Handguard Barrel Nut TRYBE Defense Standard Handguard Barrel Nut (22) List: $18.99 (Save 98%) $0.44 Blazin' Deal
Image of DFCO Kung Fu Grip Plug DFCO Kung Fu Grip Plug (20) List: $12.00 (Save 10%) $10.80 12% Bonus Bucks
Image of DFCO Kung Fu Grip Plug DFCO Kung Fu Grip Plug (20) List: $12.00 (Save 10%) $10.80 12% Bonus Bucks
Image of DFCO Kung Fu Grip Plug DFCO Kung Fu Grip Plug (20) List: $12.00 (Save 10%) $10.80 12% Bonus Bucks
Image of DFCO Kung Fu Grip Plug DFCO Kung Fu Grip Plug (20) List: $12.00 (Save 10%) $10.80 12% Bonus Bucks
Image of SB Tactical SBA5 5 Position Adjustable Rifle Brace 2 models SB Tactical SBA5 5 Position Adjustable Rifle Brace (167) List: $124.99 (Save 34%) $81.99 Blazin' Deal
Image of SB Tactical SBA5 5 Position Adjustable Rifle Brace 2 models SB Tactical SBA5 5 Position Adjustable Rifle Brace (167) List: $124.99 (Save 34%) $81.99 Blazin' Deal
Image of Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle made-in-usa-flag 4 models Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle (541) List: $54.95 (Save $5.00) $49.95 Best Rated
Image of Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle made-in-usa-flag 4 models Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle (541) List: $54.95 (Save $5.00) $49.95 Best Rated
Image of Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle made-in-usa-flag 4 models Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle (541) List: $54.95 (Save $5.00) $49.95 Best Rated
Image of Radian Weapons Glock 43X 9mm RAMJET Barrel w/ AFTERBURNER Compensator 3 models Radian Weapons Glock 43X 9mm RAMJET Barrel w/ AFTERBURNER Compensator (33) As Low As (Save Up to 18%) $389.95 Best Rated
Image of DFCO Kung Fu Grip, Black 8 models DFCO Kung Fu Grip, Black (116) As Low As (Save Up to 15%) $18.00 12% Bonus Bucks
Image of DFCO Kung Fu Grip, Black 8 models DFCO Kung Fu Grip, Black (116) As Low As (Save Up to 15%) $18.00 12% Bonus Bucks
Image of DFCO Kung Fu Grip, Black 8 models DFCO Kung Fu Grip, Black (116) As Low As (Save Up to 15%) $18.00 12% Bonus Bucks
Image of DFCO Kung Fu Grip, Black 8 models DFCO Kung Fu Grip, Black (116) As Low As (Save Up to 15%) $18.00 12% Bonus Bucks
Image of Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer (49) List: $109.95 (Save $10.00) $99.95 Best Rated
Image of Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer (49) List: $109.95 (Save $10.00) $99.95 Best Rated
Image of Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer (49) List: $109.95 (Save $10.00) $99.95 Best Rated
Image of Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer (49) List: $109.95 (Save $10.00) $99.95 Best Rated
Image of Superlative Arms Adjustable Bleed Off Gas Block 16 models Superlative Arms Adjustable Bleed Off Gas Block (283) List: $99.99 (Save 10%) $89.99 Best Rated
Image of Superlative Arms Adjustable Bleed Off Gas Block 16 models Superlative Arms Adjustable Bleed Off Gas Block (283) List: $99.99 (Save 10%) $89.99 Best Rated

2A Armament Builder Series Spring/Detents replacement Kit Unavailable & Discontinued Models

List of Unorderable Models

  • 2A Armament Builder Series Spring/Detents replacement Kit-Carpet Kit, Small, 2A-CK-1 , MPN: 2A-CK-1 , UPC: 854299007970 , Code: 2CU-LPK-FSRH-2A-CK-1
Compare (0)
1 item has been added
Add at least two items to compare