RepairGearbox Rebuild & Diagnostics
V2 internals · Tuned AOE · MOSFET install
Now accepting · Mail-in AEG repairs & custom builds
Mail-in AEG repair and custom performance builds.
Repairs, tune-ups, SSG and DSG builds, brushless conversions, and accuracy work for V2, V3, and V6 AEGs. Every completed job is tested, documented, and backed by a 90-day labor warranty.
Tune-ups from $80 · Custom builds from $320
Example Build Report
SR-25 / 16:1 / 35rps
Trigger Response0.06s
Rate of Fire35 rps
Compression0.98 PSI Δ
ReliabilityA+
Illustrative reportExample data
Secure checkout · Stripe
Visa · MC · Amex · Apple Pay
Insured UPS & USPS shipping
Build cert with every job
90-day labor warranty
150+
Total builds completed
Nationwide
Mail-in service
Itemized
Estimates before work
Documented
Testing on completed jobs
What we doFrom a quick tune-up
From a quick tune-up
to a one-of-one build.
Mail-in AEG work performed by an experienced airsoft tech, with itemized pricing and documented testing.
Repairs & Diagnostics
Diagnostics and repairs for V2, V3 and V6 electric AEG platforms.
Start a requestHigh-Speed SSG Builds
Trigger response under 0.07s with sector-clipped gear sets and tuned MOSFETs.
Start a requestDSG Builds
35+ rps with full-cycle reliability. Pre-engagement and AOE precision tuning.
Start a requestBrushless Conversions
BLDC retrofits with active braking, programmable curves, and field-proven longevity.
Start a requestCompression Overhauls
Cylinder, head, piston, nozzle, and bucking matched for consistent FPS deviation under ±2.
Start a requestFeatured Builds
Recent work off the bench
Every build ships with chrono data, ROF results, and a digital build certificate.
Repair
CustomCustom AR Build
Custom finish · Carbon outer · Full overhaul
The Process
Transparent from intake to delivery.
01
Request a Quote
Tell us about your replica and goals. We normally respond within 2 business days.
02
Estimate & Approval
Detailed scope, parts list, and a transparent labor breakdown.
03
Build & QA
Bench-tested, chrono'd, ROF verified — every cycle.
04
Ship with Cert
Tracked shipping plus a signed digital build certificate.
What customers say
Trusted by players, milsim units, and pro teams.
Customer Reviews · past customer experiences
See allReviews reflect the customer’s experience and terms at the time of service. Current warranty terms apply to all new work.
"Isaac built me the best DSG I've ever seen in my years of playing airsoft. The amount of testing, tuning and craftsmanship that went into the gearbox was well worth everything I put into it. Isaac is the only tech I'll have work on my guns."
Matt Ames
DSG Kriss Vector build
"Excellent service, advice, communication, and attention to detail — only the best parts installed with the best work. Tuned to perfection: shoots right at 350 FPS with a deviation of only 0.3 FPS. Lifetime warranty as the cherry on top."
Ben M.
13:1 CQB build
"Sent my CM16 for an accuracy upgrade and general maintenance and they absolutely delivered. Noticeable improvement to accuracy, fantastic communication, and a fantastic price. Highly recommend 6mmCustoms for any tech work."
Michael Powers
G&G CM16 Predator upgrades
Ready to build something serious?
Get a detailed estimate, timeline, and ticket number in under two minutes.
Start Your Quote