View Category

Sig 556 Swat PISTOL NIB, Quad rail, ACE FOLDING STOCK, SIG BRACE, 556/.223 Compare to LWRC, POF, H&k,, RRA, Sig 516i. Suppressor ready! AAC Blackout QD Flash Hider/Suppressor mount.

For Sale from HP LLC TX |
Positive feedback: 100% View |
Verified Seller
| 61 Completed Sales
 Sig 556 Swat PISTOL NIB, Quad rail, ACE FOLDING STOCK, SIG BRACE, 556/.223 Compare to LWRC, POF, H&k,, RRA, Sig 516i. Suppressor ready! AAC Blackout QD Flash Hider/Suppressor mount.  Guns > Pistols > Sig - Sauer/Sigarms Pistols > 556
Description: Sig 556 Swat PISTOL NIB, Quad rail, ACE FOLDING STOCK, SIG BRACE, 556/.223 Compare to LWRC, POF, H&k,, RRA, Sig 516i Suppressor ready! AAC Blackout QD Flash Hider/Suppressor mount.

This is a long stroke, not short stroke, more accurate, cleaner, last longer. See explanation at bottom. • Item Number P556-10B-SS-PSB Custom Pistol

• Caliber 55.6 X 45mm NATO



• Action Semi-Auto

• Barrel Type Button Rifled Barrel

• Flash Suppressor Advanced Armament AAC-Blackout 51T/QD Suppressor mount

• Forearm Troy Alum Quad Rail

• Weight 6.7 lbs with brace 7.2 Lbs.

• Operating System Long Stroke Full Length Gas Piston, Rotating Bolt

• Overall Length 20.5", folded 21.5", with brace 27.25”

• Barrel Length 10”

• Rifling 1 in 7”

• Sight Radius 18.1”

• Mag Capacity 10-100 rounds

• Features SB15 Stabilizing Brace, ACE folding stock adapter, 10" BBL, TROY Alum Quad-Rail Handguard. Stark AGF Foregrip Rail and TROY Diopitc folding micro battle sights (optional).



Why is this the Rolls Royce of AR Pistols? Compare to LWRC, POF, H&k, PWS, RRA The SIG 556 uses a different operating mechanism than the direct impingement (DI) operation of the classic AR-15. It’s operating system is also different from the short stroke piston designs found on other AR-15 style rifles including SIG Sauer’s own 516 line.

The P556 is built on SIG Sauer’s well-respected SG 550 platform. The 550 itself employs a long stroke piston-operated rotating bolt locking mechanism reminiscent of Mikhail Kalishnakov’s original AK-47 design. As a result, one of the first differences that you notice between the P556 and traditional AR-15 pistols is the absence of the buffer tube protruding from the back of the gun. It’s not there because you don’t need it. This has the immediate advantage of allowing you to use a Folding Stock to reduce the overall length of the rifle when transporting it or using it in close quarters.

The long stroke piston design affords two improvements over the AR-15. First, as it uses a piston to reset the bolt rather than showering the carrier with filthy gas, the gun runs cleaner. Whether this makes one whit of difference to the reliability of the gun is a matter of significant debate. What it unquestionably does is to keep the innards cleaner. The long stroke piston is also superior from an accuracy perspective to the short stroke piston design found on guns such as the HK 416 and SIG 516. Short stroke pistons strike the bolt carrier group hard to create enough momentum to cycle them back to eject the spent cartridge and load a new one. This high impact collision occurs while the bullet is still in the barrel and can result in a shock sufficient to throw the aim off just a bit. While this really doesn’t matter at the intermediate ranges the 5.56 mm cartridge is designed for, if you’re trying to make a long range precision shot, the short stroke piston design is not likely to be the most accurate system. A long stroke piston by comparison starts very close to the bolt carrier so when it strikes the bolt carrier, the shock is reduced.

Second, the long stroke piston is designed to remain in contact with the bolt carrier during the entire rearward travel, so it operates more as a gentle push rather than a powerful strike. There’s minimal if any shock to the rifle when the piston is operating so the rearward travel of the bolt carrier is much smoother and the chance of throwing off the aim of the gun much less. For this reason, the SG550 line of guns are well respected for their medium- to long-range accuracy.

PAYMENT IS EXPECTED WITHIN 5 DAYS OF PURCHASE OR ITEM WILL BE RE-LISTED AND NON-PAYMENT STRIKE ISSUED. If you are mailing payment please provide valid tracking number so that I know payment is en-route or I will re-list item after 5 days. Sorry to be so strict but 1 out of 4 transactions currently ends in a non paying buyer.


Condition: New In Box
Brand: SIG SAUER 556 SWAT Pistol
Caliber: .223 Remington (5.56 NATO)
Location: FL

Trades Accepted: No

Shipping Notes: See Description

Item #: 927402804
Seller Since: Dec. 2011
Seller Level: Verified
This seller is NOT an FFL
City: Miami
State: FL
Price:
SOLD


Shipping: $39.00
Accepted Payment Methods: Check Money Order
Returns: No Returns

Your Recently Viewed Items

|regenC|MC Set || Li Mc miss || || LP Mc miss ||