Bolter Conversion for M4 Airsoft by xceptionzero

Last crawled date: 3 years ago

Bolter conversion for m4 Airsoft gun
UPDATES: Aug 2017
Fixes: July 2017 !
2 parts have been updated:
Boltergrip3.stl and BolterOuterBarrel4.stl
This now allows the handguard to lock in the outerbarrel :)
The donor used for this was a G&G Raider Polymer bodied airsoft M4.
The inner barrel, front iron sight, metal reinforcing bar and bushing from inside the rail system were disposed of.
If you choose assembly 1 or 2 also remove the stock and the stock protrusion from the receiver sawn off. The Charging handle was also removed.
(Included pictures show the result).
There are 3 ways to use this kit:
1: Front wired using all parts with a QD attachment at stock end.
2: Front wired using all parts without a QD attachment at stock end.
3: Rear Wired ( in which case do not use the Stock End parts)
Using other models of airsoft gun.
Some modification of these parts may be required as this was custom made for a G&G combat machine raider that was front wired.
The QD used for this was from:http://www.ant-supplies.uk/gun-sling-fittings/flush-fit-gun-sling-swivels.html
(picture attached)
Parts List
BolterFrontSight
BolterRearSight
BolterGrip1
BolterGrip2
BolterGrip3
BolterGrip4
BolterGripLock x2 (these go in after the nuts to keep them secure, if these dont fit tightly please gluse them in after the nut goes in)
BolterGripRib1 x5
BolterGripRib2
BolterOuterBarrel1
BolterOuterBarrel2
BolterOuterBarrel3
BolterOuterBarrel4
BolterStockEnd1
BolterStockEnd2
BolterStockEnd1withoutQD (this is the optional end for those not using a QD
M5X25MM Bolt (for stock end, you can use a 30mm or 35mm also)
M4X30MM Bolt x3
M4X10MM Bolt x2
M4 Nut x4 (x5 if using QD version of Stock End)
M4X8MM Bolt x1 (if using QD version of Stock End)
2 part Epoxy(Araldite or similar)
Notes
1: Parts on diagram with striped texture are points of contact that are glued.
Side Rail Covers
I have included these parts, but they are plain. I have included a file for the eagle logos too. (however i had trouble printing them and got some from shapeways instead: https://www.shapeways.com/product/CLWA9ZY2G/eagle2?optionId=62896387&li=shop-inventory)
Sights
I have drilled 2mm holes and set some tritium tubes into the sights. Very easy to do for night sites :)