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Weapon Shield 90

  • EXTENDED Industry Leading 90 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
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Weapon Shield Extended 135

  • TRIPLE EXTENDED Industry Leading 135 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
  • Shipping Insurance

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  • Gearbox Lubrication
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  • Industry Leading 45 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Standard processing time, 1-2 business days

AMS Proshop Warranty Options

Airsoft Megastore is proud offer our customers the most comprehensive warranty options in the industry. Orders are processed within our standard 1-2 business days from the date of purchase and shipped out with your selected shipping method (chosen at checkout). All accessories and upgrade parts are shipped within their manufacturer's packaging, to best protect each part during shipping. Upon arrival, the player will need to easily attach their own parts. Please be careful not to void your warranty by opening your gearbox, or damaging any of the accessories, as they are not covered under any warranty.

We suggest that anyone investing in a gun from our custom proshop purchase a weapon shield protection plan. There's no sense in spending your hard earned cash on something this awesome and then be at the mercy of the manufacturer's limited parts warranty. Purchase a weapon shield plan, 90 or 135 day plans to protect your airsoft investment. Our 135 day plan includes an inhouse tech service that you have 135 days to use. Our techs will do a clean up that should keep your airsoft investment running like the day you got it. All Weapon shield customers are prioritized for order processing as well as other services. Join the our satisfied Weapon Shield customers today!

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Bolt B4 LRP Full Metal Airsoft M4 AEG Carbine w/ BRSS Recoil System

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$389.00Guaranteed Lowest
  • Model: M4
  • Muzzle Velocity: 420 FPS
  • Build Material: Metal Receiver, Rails, Barrel
  • Weight: 7 lbs
  • Overall Length: 32" in. / 35" in.
  • Inner Barrel: 363 mm
  • Battery Type: 11.1V Nunchuck
  • Gearbox: Version 2 (Metal)
  • Magazine Capacity: 300 rounds
  • Color: Black
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Our take:  Bolt Airsoft, well known for their B.R.S.S. (Bolt Recoil Shock System), which simulates the felt recoil of a real firearm, has released their latest M4 Carbine AEG utilizing their popular B.R.S.S. system.  The NEW Bolt B4 LRP features a 12-inch, free float rail system paired with a 14-inch barrel, which makes this airsoft rifle well suited for attaching rail mounted accessories.  Bolt has also included their newly designed BTS (Bolt Tactical Stock), which features ambidextrous QD sling mounts and ample battery space for an 11.1V LiPo battery.

Internally, the Bolt B4 LRP Carbine AEG utilizes the same high-end components found in other Bolt Airsoft guns, including a CNC-machined aluminum piston, a steel gear set, a high torque motor and a reinforced gearbox shell.  These not only make the B4 LRP Carbine much more rugged than similar AEGs on the market, they also help prevent wear when using high voltage (11.1V) LIPO batteries.  Additionally, the Bolt B4 LRP AEG is equipped with an M120 spring, 6.00mm diameter inner barrel, and perpendicular adjusting hop-up chamber that provides this Bolt M4 AEG with a high muzzle velocity (420 FPS w/ 0.20g BBs) and unparalleled range (250 feet in optimal conditions).

The Bolt B4 LRP Carbine not only provides some of the strongest felt recoil of any AEG, it also performs better than most other similarly priced AEGs on the market!  If you are looking for that perfect out-of-the-box airsoft M4 that is perfect for outdoor fields, the Bolt Airsoft B4 LRP Carbine is your best option.

- Built-in Bolt Recoil Shock System (BRSS)
- Full metal receiver and outer barrel
- 12-inch aluminum quad rail system
- Free float 14-inch outer barrel
- More than 42 inches of combined rail space
- Removable front & rear iron sights
- Upgraded one-piece hop-up unit
- Six-position Bolt BTS stock w/ QD sling mounts
- Steel flash hider included
- Rear wired for nunchuck batteries
- Shoots up to 420 FPS (w/ 0.20g BBs)

Operation:  Electric Automatic (Blowback)
Build:  Metal Upper/Lower Receiver, Outer Barrel, Rail System, Buffer Tube / Polymer Stock, Motor Grip
Firing Modes:  Semi-automatic, Full-automatic, w/ Functional Safety
Muzzle Velocity:  420 – 430 FPS (w/ 0.20g BBs)
Gearbox:  Full Metal Version 2 (w/ Bolt recoil system)
Magazine:  300rd High Capacity (gear wind-up)
Battery:  11.1V Nunchuck Battery (not included)
Hop-Up:  Adjustable
Weight:  7 pounds
Overall Length:  32" in. / 35" in. (Retracted / Extended)

NOTE:  LIPO Charger NOT INCLUDED. We recommend the Intellect VOLT Universal Battery LIPO Balance Charger.

Package includes:  Bolt B4 LRP Carbine AEG, hicap magazine, steel flash hider, replacement mini Tamiya connector, Bolt decal stickers, instruction manual

Ammo type:  Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs.  For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs that carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed.

Battery Charger Recommendation:  Airsoft Megastore recommends the use of a universal smart charger to avoid overcharging the battery (overcharged batteries may cause decreased airsoft gun performance and may shorten battery life significantly).  Smart chargers not only shorten charge time significantly (up to 800% faster charging), but more importantly, also automatically shut off once the battery is fully charged to avoid overcharged batteries.

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Product Reviews

5 Bolt B4 LRP Full Metal Airsoft M4 AEG Carbine w/ BRSS Recoil System *****
Badass gun

"Bought this gun several weeks ago. This thing is so nice feeling, The blow back is awesome! Super accurate shoots super hard. I recommend this rifle to anyone. I took the whole thing apart, if you can disassemble the real thing then this one is no problem Barrel is super nice, Inner parts are high quality, Good rate of fire, Grouping at about 100ft is impressive using acog scope."

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The store is amazing. I have found there items that I could not find in other stores which makes it the best. I have made questions and inquires about products and the customer service has responded super fast with accurate answers. All my products have arrived in excellent conditions in spite of other stores. My last product came late because it was rescheduled but that was UPS fault I think. I would like to thank Matthew for his exceptional customer service. Whenever you need help, please try to contact him. My advice, buy in Airsoft Megastore, they have coupons and the widest variety of airsoft products. RandyLoy, USA
I ordered a gun sling a couple weeks ago. Unfortunately, one of the clips broke. After a few email correspondings with a customer service representative named Jun (my emails did not show a last name), AMS sent me a replacement sling for free. I did not even have to send my clip back. AMS is a terrific store and I plan on doing more business with them. They were polite, efficient, and just a pleasure to work with. I would recommend Airsoft Megastore to anyone. mskanwischer, USA
Airsoft Megastore is The Best Airsoft Website Out There (I Think) and i Will Always Be Loyal to AMS and Order Almost All of my Gear From Them. The Customer Service is Also Amazing, Jun my Customer Service Representative Has Helped Me With Anything i Needed Help With, Especially My Order Problem (Had 2 Magazines Missing from Order) and Jun Helped Me With The Problem, and Now The Mags Have Been Shipped To Me. Thank You So Much AMS and Jun. Ethan1214, Saskatchewan, Canada
I love that Airsoft Megastore has videos of most any information you will need to learn and care for your products. I purchased an AEG for my son and in short order, unfortunately, it began grinding after brief use. I emailed for warranty repair with symptoms and with 24 hours (22 to be exact) I received an email explaining possible causes with a video like for tuning the gun. I had the gun working again within 15 minutes, avoiding returning the gun and the mess associated with returns\repairs. Excellence on Sean's part to help out a first time customer of theirs. Highly recommend. bucfanjeff, USA
Everything worked great, shipping was super fast. I am very pleased and won't hesitate to order through airsoft megastore again. rob_riley, USA
I loved buying from airsoft megastore because the employees helped me recover my tracking number and told me where the package was at, I would love to buy from airsoft megastore again! Battlefield4Rule, USA
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