Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
Maxim Defense SDX 505 ISU 300 Blackout Complete Upper Receiver with DSX Suppressor - 5.5" - Arid by Maxim Defense -

Product Description

Maxim Defense SDX 505 ISU 300 Blackout Complete Upper Receiver with DSX Suppressor - 5.5" - Arid

Maxim Defense SDX 505 ISU 300 Blackout Complete Upper Receiver with DSX Suppressor - 5.5" - Arid

at Primary Arms
Browse all Primary Arms deals
$2155.50
Out of Stock
Price verified today
Buy Now at Primary Arms
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Maxim Defense
Maxim Defense

Shop more Maxim Defense Gun Parts

All 27 in-stock Maxim Defense Gun Parts from 8 stores →

More from Maxim Defense

Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense PDX-SD 5.56 NATO SBR with PDX-SD 5.56 Suppressor - 5.5" - No Mag Maxim Defense PDX-SD 5.56 NATO SBR with PDX-SD 5.56 Suppressor - 5.5" - No Mag View Details
$3325.50
Buy Now · $3325.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense 5.56 NATO SBR with DSX:D Suppressor - 10.3" - No Mag Maxim Defense 5.56 NATO SBR with DSX:D Suppressor - 10.3" - No Mag View Details
$3325.50
Buy Now · $3325.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense PDX-SD 7.62x39 SBR with PDX-SD 7.62 Suppressor - 5.5" - No Mag Maxim Defense PDX-SD 7.62x39 SBR with PDX-SD 7.62 Suppressor - 5.5" - No Mag View Details
$3325.50
Buy Now · $3325.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense MD15 A3 5.56 NATO AR-15 SBR with CTR Stock - 11.5" - No Mag Maxim Defense MD15 A3 5.56 NATO AR-15 SBR with CTR Stock - 11.5" - No Mag View Details
$2425.50
Buy Now · $2425.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense MD15L 6mm ARC AR-15 Rifle - 18" - No Mag Maxim Defense MD15L 6mm ARC AR-15 Rifle - 18" - No Mag View Details
$1649.00
Buy Now · $1649.00
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense MD15 Duty 5.56 NATO AR-15 SBR - 11.5" - No Mag Maxim Defense MD15 Duty 5.56 NATO AR-15 SBR - 11.5" - No Mag View Details
$1435.50
Buy Now · $1435.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense MKIV-SD Ruger Mark IV Integrally Suppressed 22 LR Rimfire Pistol - 3.75" - 1x 10rd Mag Maxim Defense MKIV-SD Ruger Mark IV Integrally Suppressed 22 LR Rimfire Pistol - 3.75" - 1x 10rd Mag View Details
$1165.50
Buy Now · $1165.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense MD15 Duty Precision 6mm ARC AR-15 Rifle - 18" - 1x 30rd Mag Maxim Defense MD15 Duty Precision 6mm ARC AR-15 Rifle - 18" - 1x 30rd Mag View Details
$1705.50
Buy Now · $1705.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense Quantum 22K .22 LR Suppressor - 1/2x28 - Titanium Maxim Defense Quantum 22K .22 LR Suppressor - 1/2x28 - Titanium View Details
$199.95
Buy Now · $199.95
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Maxim Defense PDX-SD 300 Blackout SBR with PDX-SD 7.62 Suppressor - 5.5" Maxim Defense PDX-SD 300 Blackout SBR with PDX-SD 7.62 Suppressor - 5.5" View Details
$3325.50
Buy Now · $3325.50
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR9 Buffer Tube Kit with JP Silent Captured Spring - Carbine - 9mm Maxim Defense CQB Carbine K AR9 Buffer Tube Kit with JP Silent Captured Spring - Carbine - 9mm View Details
$209.66
Buy Now · $209.66
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR-15 Heavy Buffer Tube Kit With JP Silent Captured Spring - Carbine Maxim Defense CQB Carbine K AR-15 Heavy Buffer Tube Kit With JP Silent Captured Spring - Carbine View Details
$187.16
Buy Now · $187.16
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR-15 Buffer Tube Kit With JP Silent Captured Spring - Carbine Maxim Defense CQB Carbine K AR-15 Buffer Tube Kit With JP Silent Captured Spring - Carbine View Details
$164.66
Buy Now · $164.66
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR9 Buffer Tube Kit - Carbine Maxim Defense CQB Carbine K AR9 Buffer Tube Kit - Carbine View Details
$155.66
Buy Now · $155.66
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR-15 H3 Buffer Tube Kit - Carbine Maxim Defense CQB Carbine K AR-15 H3 Buffer Tube Kit - Carbine View Details
$137.66
Buy Now · $137.66
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Gen 6 Collapsible AR-15 Stock - PDW - FDE Maxim Defense CQB Gen 6 Collapsible AR-15 Stock - PDW - FDE View Details
$134.96
Buy Now · $134.96
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Gen 6 Collapsible AR-15 Stock - PDW Maxim Defense CQB Gen 6 Collapsible AR-15 Stock - PDW View Details
$130.46
Buy Now · $130.46
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR-15 H2 Buffer Tube Kit - Carbine Maxim Defense CQB Carbine K AR-15 H2 Buffer Tube Kit - Carbine View Details
$128.66
Buy Now · $128.66
Primary Arms
Primary Arms
Last Updated:
Nov 15, 2026 10:05 AM
Sold Out
Maxim Defense CQB Carbine K AR-15 H1 Buffer Tube Kit - Carbine Maxim Defense CQB Carbine K AR-15 H1 Buffer Tube Kit - Carbine View Details
$119.66
Buy Now · $119.66
Primary Arms