18″ SOTM5 .308 WINCHESTER PRS RIFLE, FDE CERAKOTE®
Both sides of the rifle as built. Zoom in and inspect it.
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CONFIGURATION SHOWN: 18″ Faxon Duty Series Gunner profile .308 Winchester barrel, 4150 CMV, button rifled, 1:10 twist, QPQ nitrided, with a Faxon Gunner 7.62 MuzzLok® 3-port removable muzzle brake; rifle-length RIFLESPEED adjustable gas system with the gas block pinned to the barrel with a steel coil spring pin; 15″ SOT Wedge-Lock M-LOK® handguard; SOTM5 MOD-0 thermal-fitted 7075-T6 aluminum billet upper receiver, no forward assist, LR-308 DPMS high pattern, with laser-engraved T-marks; Breek Arms WARHAMMER Mod2 charging handle in FDE; ejection port dust cover engraved .308 WIN (shown); KAK Industry LR-308 double-ejector bolt carrier group; paired with the SOTM5 7075-T6 aluminum billet lower receiver with upper receiver tension screw, Geissele SSA-E® two-stage trigger, rifle-length receiver extension with KynSHOT RB5006 hydraulic buffer and JP Enterprises tuned and polished buffer spring, Radian Weapons Talon® 45/90 ambidextrous safety selector, Battle Arms Development enhanced AR-308 steel pivot and takedown pins, ambidextrous bolt release (SOT proprietary serrated right-side release shown), ambidextrous magazine release (right-side button shown), Magpul PRS® GEN3 stock, Magpul MIAD® GEN 1.1 TYPE 2 grip and Magpul PMAG® 20 LR/SR GEN M3™ magazine; upper, lower and handguard finished in FDE Cerakote®, furniture black.
CONFIGURATION SHOWN: 18″ Faxon Duty Series Gunner profile .308 Winchester barrel, 4150 CMV, button rifled, 1:10 twist, QPQ nitrided, with a Faxon Gunner 7.62 MuzzLok® 3-port removable muzzle brake; rifle-length RIFLESPEED adjustable gas system with the gas block pinned to the barrel with a steel coil spring pin; 15″ SOT Wedge-Lock M-LOK® handguard (SECOND OF TEN mark shown); SOTM5 MOD-0 thermal-fitted 7075-T6 aluminum billet upper receiver, no forward assist, LR-308 DPMS high pattern, with laser-engraved T-marks; Breek Arms WARHAMMER Mod2 charging handle in FDE; KAK Industry LR-308 double-ejector bolt carrier group; paired with the SOTM5 7075-T6 aluminum billet lower receiver (SECOND OF TEN LLC · STUART, FL and MOD: SOT M5 · CAL: MULTI rollmarks shown) with upper receiver tension screw, Geissele SSA-E® two-stage trigger, rifle-length receiver extension with KynSHOT RB5006 hydraulic buffer and JP Enterprises tuned and polished buffer spring, Radian Weapons Talon® 45/90 ambidextrous safety selector (shown, configured at 90°), Battle Arms Development enhanced AR-308 steel pivot and takedown pins, ambidextrous bolt release (paddle-style oversized bolt catch shown), ambidextrous magazine release with an extended left-side release (shown), Magpul PRS® GEN3 stock, Magpul MIAD® GEN 1.1 TYPE 2 grip and Magpul PMAG® 20 LR/SR GEN M3™ magazine; upper, lower and handguard finished in FDE Cerakote®, furniture black.
The gas system is adjustable at the block
A RIFLESPEED gas control lets the rifle be tuned to the load and to a suppressor, rather than being fixed by port size at manufacture. On a large-frame .308, where ammunition varies widely, that is the difference between a rifle that runs one load well and one that can be set for the load in hand. The gas block is pinned to the barrel with a steel coil spring pin, in line with the Bombproof by Design™ philosophy.
The selector is configured at 90°
The Radian Weapons Talon® 45/90 can run as a standard 90° selector or a 45° short throw by rotating the shaft 180° inside the lower receiver. It is installed at 90° and can be reconfigured by the end user.
The buffer takes energy out
The KynSHOT RB5006 is a hydraulic damper for AR-10 rifle-length fixed-stock tubes: on the rearward stroke it converts some of the carrier’s energy to heat rather than storing it, and KYNTEC says it helps prevent bolt bounce. It runs here with the JP Enterprises tuned and polished spring.
* A note on the name
SOTM5 names the rifle; the serialized part is the lower receiver. MOD-0 names the thermal-fitted billet upper, here without a forward assist. PRS identifies the stock configuration, built with the Magpul PRS® GEN3. The magazine shown is engraved; the rifle ships with a plain, unmarked magazine. The serial number on the left side has been blurred in this photograph; no other marking has been altered.
// Specifications
| Model | SOTM5 *18″ PRS rifle |
|---|---|
| SKU | RFL-M5-308-B180-FDE |
| Chambering | .308 WinchesterRuns 7.62×51 NATO |
| Length · weight | 40″ overall9 lb 9.14 oz |
| Barrel | 18″ Faxon Duty Series, Gunner profile1:10 twist · 4-groove button rifled · 4150 CMV · QPQ nitride |
| Muzzle | Threaded 5/8×24Faxon Gunner 7.62 MuzzLok® 3-port brake, removableDirect-thread suppressor ready with the brake removed |
| Gas system | RIFLESPEED adjustableGas block pinned to the barrel with a steel coil spring pin · rifle length |
| Handguard | 15″ SOT Wedge-LockM-LOK® · free float · FDE Cerakote® |
| Upper receiver | SOTM5 MOD-0 billet, no forward assist7075-T6 aluminum · LR-308 DPMS high patternLaser-engraved T-marks · dry film lubedThermal fitted · FDE Cerakote® |
| Charging handle | Breek Arms WARHAMMER Mod2, AR-10FDE |
| Dust cover | Engraved .308 WIN |
| Bolt carrier group | KAK Industry LR-308Double ejector · 9310 phosphate bolt · 8620 carrierHydraulically staked gas key · MPI tested |
| Lower receiver | SOTM5 billet, marked MULTI7075-T6 aluminum · upper receiver tension screw |
| Trigger | Geissele SSA-E®Two-stage · M4 curved bow · 2.9–3.8 lb |
| Receiver extension | Rifle lengthBlack anodized |
| Buffer | KynSHOT RB5006 hydraulic17-4 stainless |
| Buffer spring | JP Enterprises tuned and polished |
| Safety selector | Radian Weapons Talon® 45/90Ambidextrous · configured at 90° |
| Takedown and pivot pins | Battle Arms DevelopmentEnhanced AR-308 pin set · steel |
| Bolt release, left | Paddle-style oversized bolt catch |
| Bolt release, right | SOT proprietary, serrated |
| Magazine release | AmbidextrousExtended left-side release · right-side button |
| Stock | Magpul PRS® GEN3Black |
| Grip | Magpul MIAD® GEN 1.1 TYPE 2Black |
| Magazine | Magpul PMAG® 20 LR/SR GEN M3™Plain, includedLancer L7AWM® upgrade available, +$20 |
| Finish | FDE Cerakote®Upper, lower, handguard and charging handle · furniture black |
Photography © Second of Ten LLC. Battle Arms Development, Breek Arms, Faxon Firearms, Geissele Automatics, JP Enterprises, KAK Industry, KYNTEC, Lancer Systems, Magpul, NIC Industries, Radian Weapons and RIFLESPEED names and marks, including Cerakote®, KynSHOT, MuzzLok®, SSA-E®, L7AWM®, M-LOK®, MIAD®, PMAG®, GEN M3™, PRS® and Talon®, are the property of their respective owners. Their appearance indicates that Second of Ten incorporates the component, not sponsorship, affiliation or endorsement.