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

"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.

"The bolt increased the FPS as expected, and it gives the rifle a very satisfying ting sound. Satisfied with the purchase.

"Solid bolt.

Pros:

-Price (compared to NPAS Kit to raise your FPS)
-Sturdy
-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.

"Wow! This damn bolt makes my rifle fire so crisp and hard as hell! damn thing was shooting at 500fps with Nuprol red gas (obviously It was shooting way to hot so I switched to Nuprol green gas, wich works great at around 397-405fps) Very great bolt for the KWA LM4 and I recommend it to every LM4 owner!

"Dropped right in and works to a degree. However, it is shorter than the original bolt so it has about 3-4mm of free travel inside the reciever before it hits the buffer making it not fully Seat after letting go of the charging handle. This is annoying and might cause issues.
As i have purchased my Lm4 used i cannot with certanty say that my buffer provided is the correct one so i Will not say that i doesnt fit straight in based on the other reviews here. Overall it slides right in and works, i Will Remove my buffer retainer and i guess that will solve the issue by letting the buffer go further out.