SA M4 Carbine M-LOK (SA-F03 FLEX(TM) Gen2) – Black / Tan

<h5>Technical Specifications</h5>
<ul>
<li><strong>Power source:</strong> AEG</li>
<li><strong>Material:</strong> Nylon, polymer, metal</li>
<li><strong>Length:</strong> 710–790 mm</li>
<li><strong>Weight:</strong> 2260 g</li>
<li><strong>Muzzle velocity:</strong> 120 m/s (1.48 J)</li>
<li><strong>Inner barrel length:</strong> 270 mm</li>
<li><strong>Inner barrel diameter:</strong> 6.03 mm</li>
<li><strong>Hop-up:</strong> Adjustable, TDC</li>
<li><strong>Fire modes:</strong> Semi, Full Auto</li>
<li><strong>Thread:</strong> 14 mm CCW</li>
<li><strong>Handguard:</strong> M-LOK</li>
<li><strong>Recommended battery:</strong> 11.1V Li-Pol (not included)</li>
<li><strong>Connector:</strong> T-Dean</li>
<li><strong>Compatible battery types:</strong> Crane (Buffer stick, Nunchuk)</li>
<li><strong>Magazine capacity:</strong> 300 BBs (Hi-Cap)</li>
<li><strong>Motor type:</strong> Carbon</li>
</ul>
<h5>Package Contents</h5>
<ul>
<li>Specna Arms M4 AEG rifle</li>
<li>300 BBs Hi-Cap S-MAG magazine</li>
<li>Folding sights</li>
<li>Spare weaker spring (M90) for CQB</li>
<li>Specna Arms stickers</li>
<li>User manual</li>
</ul>
<h5>Warnings</h5>
<ul>
<li>Some manufacturers’ springs are <strong>overrated</strong> (e.g., an M130 spring may perform like M140–150), potentially exceeding the declared gearbox durability. <strong>We recommend using only Specna Arms springs.</strong> For other brands, <strong>choose M120-rated springs</strong> to avoid possible damage from mislabeled parts.</li>
<li>When replacing a spring with <strong>progressive (irregular) coils</strong>, ensure that the <strong>tighter coil end faces outward on the spring guide</strong>.</li>
<li><strong>Never store the replica with a connected battery.</strong></li>
</ul>