(903) 259-6600|Tue–Fri 10am–6pm · Sat 10am–5pm|2510 Hemphill St., Greenville, TX
(903) 259-6600|Tue–Fri 10am–6pm · Sat 10am–5pm|2510 Hemphill St., Greenville, TX
$1,036.99
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16″ Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
Available to order: 26 in stock
How buying works
Layaway available: reserve it for $280.64 down (25% with tax), with no fee if paid off within 30 days. Layaway details
Questions? Call (903) 259-6600.
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R, available at County Armory, the local gun store in Greenville, Texas. Order online and we ship it to your local FFL dealer, or pick it up in store at 2510 Hemphill St. after completing your ATF Form 4473.
Questions about this item? Call us at (903) 259-6600, Tuesday through Friday 10am to 6pm and Saturday 10am to 5pm.
| upc | 798681744121 |
|---|---|
| manufacturer | Sig Sauer |
| Manufacturer Part Number | RM400-556N-16B-FORGE-10 |
| Action | Semi-Auto |
| Barrel Finish | Black |
| Barrel Length | 16" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 10 |
| Magazine Included | 1 x 10-Round |
| Model | M400 |
| Number of Magazines | 1 10 rd. |
| Product Type | AR |
| Rate of Twist | 1:7" |
| Shipping Weight | 9.7 |
| Sights | Optics Ready |
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October 20, 2026
The $200 tax stamp is gone for suppressors and SBRs, and ATF has stopped enforcing Form 4 approval. Here is what still applies to Texas gun owners.
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October 13, 2026
ATF will no longer enforce Form 4 approval or tax stamps for suppressors, SBRs, SBSs and AOWs. Here's what changes for Texas buyers.
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June 11, 2026
The federal suppressor tax stamp dropped from $200 to $0 in 2026, making suppressor ownership more accessible than in decades.
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