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Premium AR-15 & AR-10 Parts

One of the primary advantages of the AR platform is that it can be easily customized to suit the shooter's needs. This versatility allows the AR to adapt to nearly any situation imaginable--and that's what makes it the premier combat rifle of the world. If you're looking to outfit your AR-15 or AR-10 with back-up sights, ergonomic pistol grips, enhanced charging handles, slings, advanced trigger kits, or just about anything else you can think of, you've come to the right place.

Our selection of AR parts can transform any basic carbine into a complete weapon system. If you're looking for replacement parts, those are available too. Stock up now so that you'll have what you need later when it's really needed. Tier One Arms stocks products from reputable manufacturers such as Magpul, Vltor, Noveske, ALG Defense, and more, so you won't ever have to think twice about trusting your gear.

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End Plate - AR15
Price : $4.80
Castle Nut - AR15
Price : $7.00
End plate for AR 15 Buffer Spring for AR15 Collapsible Stocks. Made by CMT/Stag. Castle Nut for AR15 collapsible stocks.
Barrel Nut for AR15
Price : $7.90
Barrel nut for the AR15, made by CMT/Stag. The MOE™ Trigger Guard is an enhanced polymer drop in replacement for the M16/AR15 weapons platform.

Available in Black and FDE
Magpul Enhanced M16 Trigger Guard- A drop in replacement for the standard AR15/M16. Patent Pending design allows for gloved use without having to fold down guard
Carbine H Buffer
Price : $19.00
Seekins Precision enhanced bolt release button for AR15 / M16 family of weapons. A larger, textured lever for quicker deployment. Designed for use with MOE and ACR™ (Adaptive Combat Rifle) Hand Guards, the MVG is a basic, light weight, cost-effective vertical fore grip that attaches directly to these hand guards without any rail needed.

Black and FDE
Carbine H buffer for the AR15, weight is 3.9 oz. Made by CMT/Stag.
Fortis QD End Plate
Price : $21.80
The Magpul Original Equipment Grip (MOE)

Black and FDE
The Magpul Original Equipment Grip (MOE)

Black and FDE
Fortis QD Sling Swivel Attachment End Plate. Designed for carbine style buffer tubes for the AR15 & 308 platform.
Noveske QD End Plate
The MOE+ Grip combines reinforced polymer body construction with comfortable, wrap-around rubber overmolding for maximum weapon control in adverse environments.

Black and FDE
Designed for use with milspec 1913 Picatinny rail hand guards, the RVG is a basic, light weight, cost-effective vertical fore grip.

Black and FDE
Carbine Receiver End Plate with QD Sling Swivel Attachment
Magpul BAD Lever
Price : $28.35
Developed from the operational experience of the Magpul® Dynamics team, the B.A.D. Lever™ (Battery Assist Device) is designed to considerably improve the speed and efficiency of the AR15/M16 bolt catch. Battle Arms Development Enhanced Pins set consists of the ETP (Enhanced takedown pin) and EPP (Enhanced Pivot Pin). Precison CNC machined from bar stock, the EPS are made from hardened 12L14 steel and finished in milspec maganese phosphate. Fortis Mfg Rail Attachment Point with its compact & robust design is perfect in size and function. The RAP™ accepts the Heavy Duty quick detachable sling swivels (Included).
Mil-Spec 6 position buffer tube. Made from 6061 T6 aluminum, hard anodized black finish. These are made by CMT.

Milspec Buffer Tube will fit stocks such as VLTOR, COLT, LMT or CMT/STAG, MAGPUL etc.
This update to the original MIAD has improved strap retention and also comes standard with the newest grip core; a lubrication bottle core. The Magpul AFG2 (Angled Fore-Grip) takes into account natural body mechanics and provides a comfortable and stable user interface that reduces fatigue and allows for more precise weapon control.

Black and FDE
The MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up front sight.

Black or FDE
The ALG Defense Quality Mil-Spec (QMS) Trigger is designed for those shooters where tradition, value and regulatory concerns are of primary importance. The pull of the QMS is very similar to a standard mil-spec trigger, however the majority of the associated grittiness of the stock trigger pull has been removed while the well known reliability of a stock trigger remains. The pull weight is not lower than the M4/M16 minimum weight specification of 5.5lbs.

**Tuned by Geissele Automatics**
The BCMGUNFIGHTER™ Charging Handle and extended latches feature internal redesigns to direct the force off of the roll pin and into the body of the charging handle during support hand only manipulations.
The BCMGUNFIGHTER™ Charging Handle and extended latches feature internal redesigns to direct the force off of the roll pin and into the body of the charging handle during support hand only manipulations. NOVESKE KeyMod Offset Light Mount
Fits: Surefire Scout Light Series
Battle Arms Development - Ambidextrous Safety Selector (BAD-ASS) for the AR15 Style Rifles and the ArmaLite, Inc's AR10 (Semi Auto). The Levers are detachable and interchangeable on both sides for maximum flexibility and user preference. The BAD-ASS is a must have for the "South Paw" and Ambidextrous Shooters!
Battle Arms Development - Ambidextrous Safety Selector (BAD-ASS) for the AR15 Style Rifles and the ArmaLite, Inc's AR10 (Semi Auto). The Levers are detachable and interchangeable on both sides for maximum flexibility and user preference. The BAD-ASS is a must have for the "South Paw" and Ambidextrous Shooters! The new MBUS (Magpul Back-Up Sight) GEN 2 is a low-cost, color injection molded, folding back-up sight.

Black or FDE
The MS3 Single QD maintains material construction and specifications identical to that of the standard MS3, but features a heavy-duty push-button QD sling swivel for the one-point (rear) weapon attachment rather than the Magpul Paraclip.

Black and FDE