+1-800-504-5897 Live Chat Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! 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 Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even 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

Supressed 300 10.5” barrel - NEMO Arms .300 Blackout Custom Carbine Buffer Spring

by Alex, Verified Owner from OK, United States Written on September 13, 2025
Review for NEMO Arms .300 Blackout Custom Carbine Buffer Spring
NEMO Arms .300 Blackout Custom Carbine Buffer Spring
NEMO Arms .300 Blackout Custom Carbine Buffer Spring
$29.49 $25.99 Save 12%
View Product
Write a Review View All Reviews
Compare (0)
1 item has been added
Add at least two items to compare

Alex's Review of NEMO Arms .300 Blackout Custom Carbine Buffer Spring

I have been playing with my AR components to get subsonic ammo to cycle correctly. I have an adjustable gas block and had my gun cycling fairly reliably except no lock back. I was still getting stove pipe jambs if the gun got dirty at all. With this spring and an H3 weight I was able to adjust the gas block and get great cycling reliability and full lock back.
Pros:
  • Works great and as advertised
Cons:
  • None
Would Recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
Share