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KWA High Power Bolt Assembly for LM4 M4 Series Airsoft GBB Rifles

ID: 52976 (KWA-197-90320)
4.8 stars, based on 5 reviews
KWA High Power Bolt Assembly for LM4 M4 Series Airsoft GBB Rifles
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.


  • Heavy duty steel bolt carrier & carrier key
  • Weather resistant parkerized finish
  • Lightweight reinforced polymer bolt
  • Reinforced internal valves
  • Increases stock performance by about 50-70 FPS
  • Improved range
  • Direct drop-in replacement part
  • Complete bolt assembly

Manufacturer: KWA


Compatibility: For KWA LM4 M4 Series Airsoft GBB Rifles
Material: Steel, Nylon Fiber Polymer

About KWA

Established in 1988, KWA has been the leadingdesigner and manufacturer of airsoft replica weapons for law enforcement and military training. Its reputation for quality, performance, and reliability makes KWA a recognized leader in professional airsoft products.In a time when airsoft development is focused on external replications and logos, KWA has been advancing airsoft technologies with the introduction of the NS2 Gas Blowback System and the 2GX Mechbox. Both product advancements increase the overall performance and reliability beyond all conventional standards of the industry. These products represent KWAs commitment to excellence and passion for engineering products that simply outperform.KWAs state-of-the-art manufacturing facility is located in Taiwan with an independent sales and distribution operation in the United States that services the Americas and all European Regions.

5 Customer Reviews

(Write a review)

by Danny J. on 05/24/2019
"The best upgrade you can do for a kwa lm4. Mines chronoed at 330-40 stock. I threw this in there with a 6.02 inner barrel and it chronos at 380-390 with .25s. And to install its super simple. All you do is take out the old bolt carrier and drop this one in. Simple no further work. Im going to buy this again for my sopmod style lm4. I have this bolt in my mk18 lm4 which is probably why it chronoed lower.
by Charlie d. on 05/19/2018
"The bolt increased the FPS as expected, and it gives the rifle a very satisfying ting sound. Satisfied with the purchase.
by Seth H. on 11/27/2017
"Solid bolt.


-Price (compared to NPAS Kit to raise your FPS)
-Super easy to install like all LM4 Bolts, and can just be replaced for a CQB bolt. Save your money and stay away froim the NPAS Bolt. This thing is great to switch out with the stock bolt.

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